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【简答题】
某品种玉米在某地区种植的平均产量为 350 kg /666.7 m 2 ,标准差为 70 kg /666.7 m 2 , 问产量超过 400 kg /666.7 m 2 的占百分之几 ?
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举一反三
【单选题】-Are you going to take a vacation this year? -__________
A.
Not if I can save some money.
B.
Well , not if it stops raining.
C.
Not unless I can save some money.
【单选题】I hope to have an apartment __________ a kitchen so that I can save money by cooking food by myself. [ ]
A.
have
B.
has
C.
without
D.
with
【单选题】I ______ the boy to save the money, but he would not listen to me.
A.
advised
B.
persuaded
C.
suggested
D.
insisted
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