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【单选题】
Everyone knows that the earth is spherical, ______?A.
doesn't he
B.
doesn't she
C.
doesn't it
D.
don't they
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举一反三
【单选题】Senator Smart, who understands economic principles, is trying to convince workers in her district that trade with other countries is beneficial. Senator Smart should argue that trade can be beneficial
A.
only if it allows us to obtain things that we couldn't make for ourselves.
B.
because it allows specialization, which increases total output.
C.
to us if we can gain and the others involved in the trade lose.
D.
in only a limited number of circumstances because others are typically self-interested.
【简答题】腹膜腔由__和__互相延续、移行,共同围成不规则的潜在性腔隙。
【简答题】旅游资源包括的范围很广，种类繁多，按照其形成的条件，可将旅游资源分为____旅游资源和人文旅游资源。
【简答题】17世纪,随着启蒙思想的兴起,英国出现了一种新的儿童观和教育观,认为儿童生来就是没有原罪的纯真无暇的存在,具有代表性的如:( )提出“白板说”,法国著名教育家( )为儿童具有不同于成人的精神生活,儿童具有独立的存在价值。
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