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【单选题】
已知一工厂的日产量是由有熟练工的工作x 与非熟练工的工作y 所决定的,且 。 现在,x=8小时,y=16小时,若工 厂计划增加熟练工的工作1小时,试估计 需减少非熟练工的工作几小时,使日产量不变。A.
1
B.
2
C.
3
D.
4
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【单选题】.__________having hundreds of online 'friends' is great, our real and closest connections still lie with those who are a part of our daily lives.
A.
As
B.
Once
C.
While
D.
When
【单选题】By registering for our online payment plan, customers are authorizing the bank to______automatic withdrawals on the first day of every month.
A.
consent
B.
see
C.
make
D.
trust
【单选题】In _____world, where computers rule our work and life, online searches have become _____necessity.
A.
a, a
B.
a, the
C.
the, a
D.
the, /
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【简答题】The passage mainly describes different opinions of －shopping online．10． The passage mainly describes different opinions of -shopping online．
【简答题】When we are online, our brains cannot form. distinctive and profound thinking.
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