搜题请搜索小程序“爱下问搜题”
问题 选择题

依次填入下列各句横线处的词语，最恰当的一组是[ ]

①由于过度依赖电脑，不少大学生对汉字已日渐“__________”。

②“盛世奥运”的发行具有标志性的意义，它__________了奥运史上没有此类纪念珍品的空白。

③印度 * * 表示，印度将______避免同巴基斯坦发生战争，但他同时要求印度人民做好“面对任何不测”的准备。

A．陌生    弥补    努力

B．生疏    填补    竭力

C．生疏    弥补    努力

D．陌生    填补    竭力

答案

答案：B

单项选择题

身热，微恶风，汗少，肢体酸重或疼痛，头昏重胀痛，咳嗽痰黏，鼻流浊涕，心烦口渴，或口中黏腻，渴不多饮，胸闷脘痞，泛恶，腹胀，大便或溏，小便短赤，舌苔薄黄而腻，脉数。当属何证（）

A.风寒入里

B.暑湿表证

C.风寒夹湿证

D.脾虚湿盛

E.痰热阻肺
查看答案
单项选择题

Space travel is definitely bad for astronauts’ bones, reducing their bone density after only a month of weightlessness, according to French research published on Friday.
Laurence Vico and his fellow workers at St Etienne University called for more research into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station showed bone loss continued throughout space flights.
"Bone loss was especially striking in four astronauts, " the scientists reported in the Lancet Medical Journal.
They measured the Bone Mineral Density (BMD) of bones in the forearm and lower leg of the astronauts who had spent one to six months in space.
The BMD loss was significant in the tibia of the lower leg, a weight-bearing bone, but barely changed in the radius of the forearm. "Our results indicate the need to investigate not only different bones, but also different areas of the same bone since not all sites of the skeleton are similarly affected by space conditions, " they added.
Without gravity the body isn’t bearing any weight so there is no need for calcium which makes bones p, and it becomes empty into the bloodstream.
The research team suggested in future scientists should try to determine if the loss of bone density was only on weight-bearing bones on longer flights, also the possible recovery after returning to Earth.

What cause the BMD loss to astronauts according to this passage

A. The food they eat in space.
B. The drinks they take in space.
C. The temperature in space.
D. The gravity in space.
查看答案