在酶促反应中，当底物浓度达到饱和后，再增加底物A．反应速度增加B．反应速度降低C．反应速度不变D．反

We can infer from the passage that __________．

[A] Japanese men tend to be particular about their marriage

[B] Japanese women tend to become more independent

[C] Japanese women tend to live longer than men do

[D] Japanese women prefer to marry in their thirties

A、Men as a group tend to focus more on relationships than women.

B、Men as a group tend to direct their attention to connection and relationship.

C、Men as a group tend to focus more on information in communication.

D、Women as a group are concerned more with independence and status.

Why Americans travel overseas less than their western counterparts？

A．Their vacations tend to be shorter.

B．They can't afford international tours.

C．They are more interested in making money.

D．They prefer staying where Americans are in the majority.

Why Americans travel overseas less than their western counterparts？

A．Their vacations tend to be shorter.

B．They can't afford international tours.

C．They are more interested in making money.

D．They prefer staying where Americans are in the majority.

A．Millions of Americans have given up smoking.

B．Men as a group smoke more than women.

C．Educated men and women tend to smoke mom everyday.

D．Cigarette smoking is still a widespread habit in the United States.

A、Korean Americans

B、Indian Americans

C、Japanese Americans

D、Chinese Americans

Americans are more polychronic than Chinese.()

A、a specific tariff will tend to raise more revenue than an ad valorem tariff.

B、an ad valorem tariff will tend to raise more revenue than a specific tariff.

C、an optimum tariff will tend to raise more revenue than an escalating tariff.

D、a tariff quota will tend to raise more revenue than a specific tariff.