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7.大型背包容积在50升以上,中型背包的容积一般在30- 50升之间,小型背包的容积在30升以下。

A. 对
B. 错

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10."8"字环:是最常见、最常用的下降保护,此类器械形如“8”字,结构简单.

A. 对
B. 错

11.初学滑雪的人,应该选长度短一些,弹性大一些的滑雪板

A. 对
B. 错

Filling the blanks with the words given below.enlightening discarded restore fluctuating prejudiced profitrival motivating implement investigate

Filling the blanks with the words given below.enlightening discarded restore fluctuating prejudiced profit rival motivating implement investigate3.Although personally we believe this to be of only secondary importance, its potential role in _________ innovative acts cannot be ignored.4. Though many things have been changed culturally, there is a commitment and sense of responsibility that have not yet been discarded in today’s society.5.Western nations have older and shrinking populations since they entered the 21st century and their ________birth rates have also posed problems.6.She didn’t want to marry him and was _________ against him because he had only a bachelor’s degree and didn’t meet her expectations for marriage.

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