一个平衡的等臂杠杆，下述四种措施中，不会破坏杠杆平衡的是[ ] A． 使动力和阻

--- Hi, Kate, can I use your bike for a while this afternoon?

--- Sorry.??__________?.

A．It’ s repaired?

B．It has been repaired

C．It’s being repaired?

D．It had been repaired

在混凝土的强度单位中，1Mpa等于（）

A.10个工程气压

B.1个工程气压

C.0.1个工程大气压

党员的合法权益受到党组织或者其他党员侵害时，有权向本人所在党组织、上级党组织直至中央提出（）。

A、意见

B、申诉

C、控告

D、复查

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

汽车点火系是由点火线圈、（）、火花塞、点火开关等机件组成的。

A.蓄电池、电容器

B.分电器、蓄电池

C.蓄电池、调节器

D.分电器、调节器