3. () people do not get enough to eat.
Any
B. many
C. Many
D. Much
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科学是没有国界,但科学家有自己的祖国。()
A. 对
B. 错
4. These are my pens. Where are ()?
A. their
B. theirs
C. my
D. your
如果中子和质子一样重,或电子再重上5倍,那宇宙现状不会发生变化。()
A. 对
B. 错
5. This bag of () used to be one of the best sellers in the shop.
A. his
B. him
C. it
D. itself