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The scientists have conducted a series of experiments.A:actions B:tests C:effects D:technologies

题目
The scientists have conducted a series of experiments.

A:actions
B:tests
C:effects
D:technologies
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更多“ The scientists have conducted a series of experiments.”相关问题

  • 第1题：

    After that, we have to post() letters.

    A、a set of

    B、a lot of

    C、a series of


    参考答案：C

  • 第2题：

    Scientists have made great contributions()development of our human beings.

    A. to

    B. on

    C. with


    参考答案：A

  • 第3题：

    Scientists have done __________ experiments to show that praise works better than criticism.

    A.countless

    B. countable

    C.counting

    D.count


    参考答案：A

  • 第4题：

    The researchers have conducted an experiment to prove that people will act in emergencies when ______

    A) they are in pairs

    B) they are in groups

    C) they are alone

    D) they are with their friends


    正确答案：C
    答案：C
    [试题分析]细节题。
    [详细解答]本题答案可以通过第三段最后两句内容了解。正确答案为C。

  • 第5题：

    The best statement of the main idea of this passage is that__________.

    A.scientists have found a way to prolong the period of clinical death
    B.biological death occurs when vital organs have suffered permanent damage
    C.modern scientists divide the process of dying into clinical and biological death
    D.cooling delays the processes leading to biological death

    答案：A
    解析：
    A项“科学家已找到延长临床死亡的办法”最能够体现全文主旨。

  • 第6题：

    You have configured the Odyssey Access Client with a profile which has the "Disable Server Verification" setting cleared.What will be the result if the device certificate on the MAG Series device has expired and the user attempts to authenticate?（）

    • A、The user will be instructed to call the network administrator.
    • B、The user will fail authentication.
    • C、The user will be prompted to install a new device certificate on the MAG Series device.
    • D、The user will successfully authenticate and have full network access.

    正确答案:B

  • 第7题：

    单选题
    What, according to the passage, makes the research conducted by the scientists at the Oregon Department of Health so unique?
    A

    The fact that the scientists managed to measure the average hourly increase of NNK.

    B

    The fact that the scientists succeeded in making more people realize the harm of smoking.

    C

    The fact that the scientists did a lot of experiments on smokers in public areas.

    D

    The fact that the scientists discovered NNK, a carcinogen in cigarette smoke.


    正确答案： A
    解析：
    细节理解题。答案来自第三段：“We were somewhat surprised by the immediacy of the effect and the fact that we could measure the average hourly increase.”

  • 第8题：

    单选题
    The scientists have absolute freedom as to what research they think it best to_______
    A

    pursue  

    B

    devote  

    C

    adjust  

    D

    engage


    正确答案： C
    解析：
    科学家有绝对的自由去从事他们认为最棒的研究。pursue research从事研究，进行研究。devote to把…奉献；把…专用。adjust to适应，调节；使适合于…。engage in参加；从事；忙于…。

  • 第9题：

    单选题
    You are given a series of numbers. Your task is to see how they form a relationship with each other. You have to choose the number that would go next in the series.　　2371739
    A

    58.

    B

    75.

    C

    85.

    D

    65.


    正确答案： D
    解析：
    2+1=3，3+4=7，7+10=17，17+22=39，继而寻找1，4，10，22之间的规律。1+3=4，4+6=10，10+12=22，3，6，12之间是两倍递增关系，按规律，它们的下一个数值是12×2=24。22+24=46，39+46=85，故选项C为正确答案。

  • 第10题：

    多选题
    You are performing the initial setup of a new MAG Series device and have installed a valid CA- signed certificate on the MAG Series device. Connectivity to an existing SRX Series firewall enforcer cannot be obtained.What are two explanations for this behavior?（）
    A

    The MAG Series device has multiple ports associated with the certificate.

    B

    The MAG Series device's serial number needs to be configured on the SRX Series device.

    C

    The SRX Series device must have a certificate signed by the same authority as the MAG Series device.

    D

    The MAG Series device and SRX Series device are not synchronized to an NTP server.


    正确答案： C,B
    解析： 暂无解析

  • 第11题：

    单选题
    The combustion of larger molecules,（）have multiple carbon-carbon bonds involves a more complex series of reactions.
    A

    what

    B

    which

    C

    that

    D

    who


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    What have the scientists found?
    A

    Time goes by fast when we have nothing to do.

    B

    The ten minutes’ break is important to students.

    C

    The brain works in different ways in different situations.


    正确答案： B
    解析：
    细节理解题。根据文章第二段第一句可知：大脑根据我们事物投入的精力而改变工作方式。故选C项。

  • 第13题：

    Experiments of this kind ____ in both the U.S. and Europe well before the World War.

    A have conducted

    B have been conducted

    C had conducted

    D had been conducted


    参考答案：D

  • 第14题：

    After that, we have to post()letters.

    A. a set of

    B. a lot

    C. a series of


    参考答案：B

  • 第15题：

    The sharp hearing of a fish _______ by two scientists.

    A.have been proved

    B.have proved

    C.has proved

    D.has been proved


    正确答案:D

  • 第16题：

    So far scientists have only acquired______understanding of the physical processes that cause earthquakes.

    A．a partial

    B．a changeable

    C．an original

    D．an individual


    正确答案：A
    解析：句意：目前，关于地震起因的自然过程，科学家的了解仍不全面。本题考查词义辨析。A项意为“不完全的，部分的”；B项意为“多变的”；C项意为“起初的，最早的”；D项意为“个人的，单独的”。根据句意可知A项在此最合适。

  • 第17题：

    The scientists are（）a series of experiments to learn more about how the body adapts to weightlessness.

    Adefining   

    Bhaving   

    Ccarrying   

    Ddoing


    D
    略

  • 第18题：

    You are performing the initial setup of a new MAG Series device and have installed a valid CA- signed certificate on the MAG Series device. Connectivity to an existing SRX Series firewall enforcer cannot be obtained.What are two explanations for this behavior?（）

    • A、The MAG Series device has multiple ports associated with the certificate.
    • B、The MAG Series device's serial number needs to be configured on the SRX Series device.
    • C、The SRX Series device must have a certificate signed by the same authority as the MAG Series device.
    • D、The MAG Series device and SRX Series device are not synchronized to an NTP server.

    正确答案:C,D

  • 第19题：

    单选题
    Since many insects have already become（）to DDT, scientists have to look for some new insecticide
    A

    active

    B

    resistant

    C

    tough

    D

    gradual


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    The scientists are（）a series of experiments to learn more about how the body adapts to weightlessness.
    A

    defining   

    B

    having   

    C

    carrying   

    D

    doing


    正确答案： A
    解析： 暂无解析

  • 第21题：

    问答题
    You are given a series of numbers. Your task is to see how they form a relationship with each other. You have to choose the number that would go next in the series.1, 3, 6, 10

    正确答案： 15
    解析：
    1+2=3；3+3=6；6+4=10；10+5=15；第二个加数从2依此递增得到下一个序列值。

  • 第22题：

    单选题
    _____ some famous scientists have the qualities of being both careful and careless.
    A

    Strangely enough

    B

    Enough strangely

    C

    Strange enough

    D

    Enough strange


    正确答案： D
    解析：
    句意：奇怪的是，一些著名的科学家具有细心和粗心的双重特质。副词strangely置于句首，修饰整个句子，enough修饰strangely，表示程度加深，应放在副词之后。

  • 第23题：

    判断题
    Scientists now have a better knowledge of learning complex skills.
    A

    对

    B

    错


    正确答案： 错
    解析：
    录音中提到的“Science now offers new conceptions of the learning process…”和“Recent research provides a deep understanding of complex reasoning and performance”，可知科学家对复杂技能的学习有了更多的了解。
    【录音原文】
    Science now offers new conceptions of the learning process and the development of competent performance. Recent research provides a deep understanding of complex reasoning and performance on problem-solving tasks and how skill and understanding in key subjects are acquired.

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