皮皮学，免费搜题
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【单选题】
微量营养素包括两大类,即( )。A.
维生素和矿物质
B.
必需氨基酸和矿物质
C.
蔬菜和水果
D.
蛋白质和微量元素
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皮皮学刷刷变学霸
举一反三
【单选题】If you have doubts about the attack, Mr. Brown can tell you the truth as he witnessed ______. [ ]
A.
it
B.
one
C.
them
D.
those
【单选题】Mr. Brown knows little Japanese, so he can’t understand the ______ on the bottle of the pills.
A.
explanations
B.
introductions
C.
descriptions
D.
instructions
【单选题】听力原文：Don't you think it would be wise for us to review how much we've invested so far? I am afraid we are unable to carry on with the project. (28)
A.
It wouldn't be wise to reopen the discussion on the project today.
B.
I think we should reconsider our investment in the project.
C.
Don't you think we could be wise by increasing our investment?
D.
Have you ever seen such a wonderful view of the woods?
【简答题】胆汁中与消化有关的成分是什么？有何生理作用？胆汁的分泌和排出受哪些因素的调节？
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