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【单选题】
Whoever invented______ wheel is believed to have made______ most useful invention in______ history.A.
a; the /;
B.
the; the; /
C.
the;. /; /
D.
a; a; the.
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皮皮学刷刷变学霸
举一反三
【单选题】— Have you finished reading Jane Eyre? — No. I ____ my homework all day yesterday. [ ]
A.
was doing
B.
would do
C.
had done
D.
do
【单选题】– May I go to play basketball now , mum? -No. You ()finish your homework first.
A.
can
B.
must
C.
may
D.
need
【单选题】—Can I play computer games now, Mum? —No. You _______ finish your homework first. [ ]
A.
will
B.
can
C.
would
D.
must
【简答题】（本小题满分14分） 已知函数 （ ）。 ⑴函数 在区间 上单调递增，在区间 上单调递减，求实数 m 的值； ⑵当 时，函数 的图象上的任意一点切线的斜率恒大于 ，求实数 m 的取值范围
【单选题】— You look pale. Did you sleep well？ — No. It was already midnight ____ I finished my homework.
A.
before
B.
when
C.
that
D.
since
【单选题】—He couldn't have finished his homework last night, _________he? —No. You see, he is busy doing it now. [ ]
A.
has
B.
could
C.
must
D.
did
【简答题】若函数 在区间 上单调递增，则实数 的取值范围为
【单选题】单项选择。 — Let's go to the movie theatre _______ a movie. — No. I have much homework to do. [ ]
A.
watches
B.
to watch
C.
watching
D.
watch
【单选题】厌氧消化过程可以分为() 。
A.
水解酸化阶段和产氢产乙酸阶段
B.
水解酸化阶段、产氢产乙酸阶段和产甲烷阶段
C.
水解酸化阶段和产甲烷阶段
D.
产氢产乙酸阶段和产甲烷阶段
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