搜题请搜索小程序“爱下问搜题”
问题 选择题

中学生林某本来是一个品学兼优的学生，偶尔一次走进了网吧，被网络游戏深深吸引，从此学习成绩急剧下滑，后因经常无故旷课、逃课被学校勒令退学，林某的经历告诉我们 [ ]

①网络游戏对青少年有害无益

②我们休闲时，可以通过网络游戏来适当的放松自己，但决不能沉迷

③我们要以丰富的学习、健身、交友等活动坚决抵制这一诱惑

④网络游戏对青少年有相当大的诱惑，社会上应关闭一切网吧

A．①②

B．②③

C．③④

D．①④

答案

答案：B

单项选择题 B型题

腓骨颈骨折有移位易发生（）。

A.脊髓损伤

B.创伤性关节炎

C.周围神经损伤

D.损伤性骨化

E.缺血性骨坏死
查看答案
单项选择题

Government officials reported three new cases of mad cow, bringing the total so far this year to 99. Last year, France recorded just 31 cases of the mad cow disease. The rising numbers are in part (1) a new testing program that focuses on cows that are most (2) . That program has (3) 39 cases. But still 60 new cases were identified in the usual way, (4) were found in 1999. Many scientists (5) that this year, five years after safety precautions were (6) , the number of cases would be (7) .

The rise in cases has (8) some scientists to question whether the disease can be transmitted in ways not yet understood. Scientists are still (9) the disease, first recognized in cows in 1986.

It appears that it is not caused by a bacteria, virus or fungus, but (10) infectious particles called prion, perhaps (11) a virus or other agent. The disease kills cells in the brain, (12) it spongy and full of holes.

France has taken more steps to (13) safety than most European countries, (14) refusing to take English beef (15) the European Union. But some scientists believe that France has not been (16) in imposing the ban on feed that (17) animal pans.

Some French officials hope that the sudden interest in mad cow disease will mean that French consumers will become educated about it, thereby recognizing that French beef is actually (18) controlled. Every cow is given a passport at birth, and extensive information about its parentage and (19) it was raised must be (20) to any slaughterhouse. When a diseased animal is found, the entire herd is destroyed.

8（）

A.attempted

B.intended

C.lured

D.prompted
查看答案