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【多选题】
以下属于农村空心化带来的后果的是()。A.
城镇化导致的农村人口减少
B.
青壮年迁出导致的老龄化
C.
从事农业的人口年龄不断减小
D.
非农劳动力比重的提高
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举一反三
【单选题】The college student lost his life trying to save the drowning child, ________ he will always be remembered.
A.
in which
B.
about which
C.
by which
D.
for which
【单选题】已知某酶的Km 值为0.05mol·L-1 ,要使此酶所催化的反应速度达到最大反应速度的80%,底物的浓度应为多少
A.
0.2 mol·L-1
B.
0.4 mol·L-1
C.
0.1 mol·L-1
D.
0.05 mol·L-1
E.
无法确定
【单选题】Newspapers are trying to save themselves by doing the following EXCEPT ______.
A.
shifting the mix of the reports towards lifestyle. and entertainment
B.
planning more subjects relevant to daily lives and politics
C.
creating new programs on-and offiine
D.
investing in daily papers free of charge
【单选题】Newspapers are trying to save themselves by doing the following except______.
A.
shifting the mix of the reports towards lifestyle. and entertainment
B.
planning more subjects relevant to daily lives and politics
C.
creating new programs on-and offline
D.
investing in daily papers free of charge
【单选题】Green organizations are trying to save rain forests that have been _____ by farmers.
A.
created
B.
ruined
C.
threatened
D.
protected
【单选题】With the oil price rising, these days people are trying to work close to home ____ save money on gas. [ ]
A.
helps
B.
helped
C.
helping
D.
to help
【简答题】拜访的礼仪应注意哪些方面？
【简答题】拜访亲友应注意哪些礼仪？
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