皮皮学，免费搜题
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【单选题】
分子中含有金属元素的维生素是 —— 。A.
维生素 B 1
B.
维生素 B 6
C.
维生素 B 2
D.
维生素 B 12
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皮皮学刷刷变学霸
举一反三
【单选题】If you go by _________train, you can have quite a comfortable journey, but make sure that you get＿fast one.
A.
the; the
B.
/; a
C.
the; a
D.
/; /
【简答题】If you go by ______ train, you can have quite a comfortable journey, but make sure you get ______ fast one. A) /, / B) /, a C) the, a D) /, /
【单选题】________wear seat belt when you drive a car. A.Make sure of B.Make sure that C.Be sure to D.Be sure that
A.
Make sure of
B.
.Make sure that
C.
Be sure to
D.
Be sure that
【单选题】Next, make sure that you ________________________________.
A.
remember to write down everything that you have memorized
B.
understand what you are trying to remember
C.
make sure you get the information correct the first time
D.
try to test yourself as you move forward
E.
being selective can also help you recall information
【单选题】Availing ourselves of this opportunity, we wish to ________ our prompt and careful attention at all times.A. make sure to you B. assure you ofC. make you sure of D. assure of you for
A.
make sure to you
B.
assure you of
C.
make you sure of
D.
asure of you for
【简答题】化学上就把这种原子间的强烈的相互作用称为______。
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