Cows must eat grain, ________ they will not grow fat.A、orB、butC、whenD、though

Which of the following is not one of the leading agricultural exports of Australia?

A.Wool
B.Meat
C.Wheat
D.Grain

共用题干
What Is Cancer?

Cancer is actually a group of many related diseases that all have to do with cells.Cells
are the very small units that make up all________(1)things,including the human
body.There are billions of cells________(2)each person's body.
Cancer happens when cells that are not normal grow________(3)spread very
fast.Normal body cells grow and divide and know when to stop growing.Over time,they
also die._______(4)these normal cells,cancer cells just continue to grow and divide
out of control and don't die.Cancer cells usually group together to form tumors（肿瘤）.
A growing tumor becomes a lump of cancer cells_________(5)can destroy the
normal cells around the_________(6)and damage the body's healthy tissues.This
can make someone very _______(7).
Sometimes cancer cells break away from the original tumor and travel to other areas of
the________(8),where they keep growing and can go on to form new tumors.This
is how cancer__________(9).The spread of a tumor to a new place in the body is
__________(10)metastasis（转移）.
People with cancer may feel pretty sick at times一but can usually still do lots of
normal things._________(11)they are very sick,kids and teenagers with cancer
may still be able to go to school. They may be tired or bruise（出现青肿）easily, but they
__________( 1 2) sometimes go to camp , movies , and sleepover（在外过夜的）parties.
People with cancer still like the same things they did__________(13)they got sick.
Cancer in kids is rare一but today,many kids who do get cancer go on living normal
lives.The number of kids who beat cancer goes________(14)every year because of
new cancer treatments.So a lot of kids with cancer will some day drive cars,go to college,
have careers,and even get_________(15)and have families of their own.

_________(3)
A: or
B: but
C: and
D: though