题目内容

以下哪些不属于我国在1960年代取得的科技成就 ( )

A. 成功爆炸第一颗原子弹
B. 成功爆炸第一颗氢弹
C. 发射第一枚中远程导弹
D. 成功发射第一颗人造卫星

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敦煌是中国西北沙漠中的一片绿洲。自公元前2世纪以来,敦煌一直是东西方商人寻找贸易和商业的重要中转站。Duhuang is an ____ in Northwest China’s desert. Since the 2nd century BC Dunhuang had been a ____ for western and oriental merchants who ____.

根据公元366年的古老传说。乐尊和尚经过敦煌时,顿时一片金光,仿佛千千万万的佛向百姓显现。和尚雇了工人挖石窟,在悬崖上造佛像来拜佛。According to the old ____ in 366 AD, the monk LeZun passed Dunhuang which was suddenly overcome with golden lights,as if tens of thousands of Buddhas had ____ to the common people.The monk hired workers to dig grottoes and build Buddha ____ on the cliff to worship the Buddha.

这就是我们所说的莫高窟。莫高窟跨度1600米,包括492个石窟,2100个彩绘佛像和壁画,占地4.5万平方米。莫高窟的创作持续了1500年,反映了佛教在中国的发展。This is what we called the Mogao Grottoes. The Mogao Grottoes ____ 1,600 metres and include 492grottoes with 2,100 painted Buddha figures and murals covering 45,000 square metres. The work on the Mogao Grottoes ____ 1,500 years and _____ of Buddhism in China.

当柱变截面需要设置插筋,插筋应从变截面处节点顶向下插入的长度为

A. 1.5Lae
B. 1.6Lae
C. 1.2Lae
D. 0.5Lae

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