单项选择题

“总体概述”是一种尝试，即试图阐明目标、解释有关问题和限定问题范围。

A.正确
B.错误

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多项选择题

Two of the following sentences are grammatically correct. Pick them up.
A、 This next chapter has a lot of difficult information in it. You should start studying right away.
B、 This next chapter has a lot of difficult information in it; you should start studying right away.
C、 This next chapter has a lot of difficult information in it you should start studying right away.
D、This next chapter has a lot of difficult information in it, you should start studying right away.

单项选择题

慢活运动呼吁我们应该把生活节奏慢下来，因为“快”让人错失了很多美好的事物。（）

A．对
B．错