Jeff likes fish very much. He buys some fish and takes it home. When(当……时候) his wife(妻子) sees the fish, she says to herself,“Good! Now I ask my friends to have lunch, and we can have the fish.”They like eating fish very much. When Jeff comes home in the evening, he can’t find the fish and his wife says,“Oh, your cat eats it.”And she gives Jeff some bread for supper. Jeff is not very happy. He takes the cat and his wife to the shop nearby(附近). Then he says to his wife,“My cat is one kilo and the fish is one kilo, too. The fish is here. But where is my cat?”

小题1:What does Jeff like very much?

A．Dogs.

B．Cats.

C．Fish.

D．Apples.小题2:Who cooks the fish?

A．Jeff.

B．Jeff’s wife.

C．Their friends.

D．No one.小题3:Jeff’s wife tells Jeff ____.

A．she eats the fish

B．the cat eats the fish

C．her friends eat the fish

D．the man in the shop eats the fish小题4:What does Jeff have for supper?

A．Some bread.

B．Some chicken and the fish.

C．The fish.

D．He doesn’t eat anything.小题5:Who eats the fish?

A．Only Jeff’s wife.

B．The cat.

C．Jeff and his wife.

D．Jeff’s wife and her friends.

表面活性剂是乳状液膜的重要组成部分，它直接影响到液膜的（）等。

A.稳定性

B.渗透速度

C.分离效果

D.破乳