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【单选题】
下列脂肪酸中,哪个是人类膳食中的必需脂肪酸?A.
软脂酸
B.
硬脂酸
C.
油酸
D.
亚油酸
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举一反三
【单选题】—Are your pencils on the desk? —No, _____. [ ]
A.
they are
B.
they aren't
C.
it isn't
【单选题】—Is your math book on the desk, Tommy? —No, it isn't. It's _______. [ ]
A.
in the drawer
B.
to the chair
C.
of the drawer
D.
for the desk
【单选题】Are the keys in the desk? Yes, _____________. [ ]
A.
they aren't
B.
it isn't
C.
they are
【单选题】The desk is not dirty. You _____ clean it. [ ]
A.
mustn't
B.
shouldn't
C.
needn't
D.
can't
【简答题】I don’t think there is＿＿＿in the book on the desk．
【简答题】阅读理解 This is a small nice room. There is a bed, a desk and some chairs in it. The desk is near the window. On the desk there is a book, a glass and some cakes. The bed is near the desk. There are swea...
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