[单项选择]How many people suffered in the air crash
[A] 85. [B] 70. [C] 64.

[单项选择]How many people suffered in the air crash
A. 85.
B. 70.
C. 64.

[单项选择]

How many people of US population suffered compulsive buying disorder a. 2 to 60 percent. b. 2 to 16 percent. c. 20 to 60 percent. d. 16 to 20 percent.

[单项选择]How many people died in this crash

[单项选择]How many African nations have direct air links to America
A. Two
B. Four
C. Six

[填空题]How many business offices are using Glux air conditioners

[单项选择]How many times is the indoor air more hazardous than the outdoor air
A. 10 to 12.
B. 12.
C. 2 to 10.
D. 2.

[单项选择] Thigh, robot People who have suffered debilitating strokes often have to cope with impaired muscles that do not work properly. Even a simple act such as standing up from a chair and walking a few steps can become extremely difficult. Stroke victims often have to rely on wheelchairs, sticks, walking frames and other "orthotic" devices to move about. But a new generation of active orthotic devices, capable of augmenting or replacing lost muscle function, is in the works. These devices use an assortment of complex computer and mechanical technology, borrowed from the field of robotics, to help patients get around. They are being made possible by the falling prices and improving performance of sensors, computer control systems and battery technology. As well as benefiting elderly patients with permanent paralysis or muscle dysfunction, such devices could also help people in recovering from "arthroscopic" (literally, "looking within the joi
A. True
B. False
C. NOT GIVEN