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【单选题】
关于经肾脏排泄的水溶性有机碘对比剂,以下说法错误的是A.
离子型对比剂在血液内呈正、负离子形态存在
B.
离子型对比剂渗透压低于非离子型对比剂
C.
非离子型对比剂不是盐类，在血液内不离解
D.
体比体含碘量高
E.
三碘苯环的衍生物
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【单选题】—What will you buy for your boyfriend's birthday? —I want to buy a () wallet for him.
A.
black leather small
B.
small black leather
C.
small leather black
D.
black small leather
【单选题】—Can I help you?—I want to buy a blue tie to my shirt.A．fitB．matchC．suitD．be fit for
A.
—Can I help you? —I want to buy a blue tie to____ my shirt. A．fit
B.
match
C.
suit
D.
be fit for
【单选题】I want to buy a hat, but there are so many kinds that I can’t decide to take.
A.
which
B.
when
C.
how
D.
where
【简答题】补全对话。 A: Let's go. B: I'm going out to buy a birthday cake for my mother. C: I want to buy a sweater for myself. D: Why are you here? E: What would you like to buy? (Outside the door of a supermarket,...
【单选题】I want to buy a computer, but there is only one left in that shop, so I'll have to buy ______.
A.
one
B.
it
C.
that
D.
them
【简答题】For this part, you are allowed 30 minutes to write a composition on Why I Want to Buy a Car. You should write at least 120 words following the outline given below. 1. Owning a car has become a common ...
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