某医师开展心血管疾病的危险因素调查。不属于个体因素的危险因素是（）。 A.遗传 B.

Across the globe, single parent homes are on the rise. In the US, the 2000 census (人口普查) showed 24.8 million, or nearly 24 percent of the nation’s 105.5 million households, were traditional two-parent homes. By comparison, 9.8 million households, or 9 percent of all US households were headed by an adult raising a child alone. The 1990 census showed 26 percent of homes were led by a married mother and father, and 8 percent of homes were led by a single parent.

Similar increases occurred in other countries. In the UK, lone-parent homes increased from 3.3 percent in 1990 to 5.5 percent in 1999. Single parent households in Australia rose from 5.8 percent in 1990 to 7.6 percent in 1999. Belgium saw the increase from 1.8 percent to 2.7 percent during the same period of time. These countries tend to have greater acceptance of the single parent because there are fewer nearby family members to disapprove, Riche, a Census Bureau director, said.

Just as in the US, those changes raised new questions about how involved govenment should be in helping single parent families. Some research suggests children raised in two-parent families are better off than those who depend on one.

“The position of one-parent families in any country is very much a gender (性别) issue-women’s opportunities, especially working-class women on low income,” said Sue Cohen, coordinator (协调员) of the Single Action Parents Network in England.

5.Not considering the exact number of the single-parent families, which country saw the fastest rise rate in 1999, compared with 1990?

A.UK.          B.Australia.               C.America.               D.Belgium.

6.What is the cause of the rise of single parent families across the globe?

A.The nearby family members have a favourable opinion.

B.A lone parent is well off enough to support his /her children.

C.A lot of problems have arisen in two-parent families.

D.We cannot get enough proving information from the text.

7.Which of the following is TRUE about the increase of single parent families according to the passage?

A.It will somewhat limit the growing population of younger generation.

B.Governments should take actions about the social problems brought about by it.

C.Single parent families are not looked down upon in any country mentioned here.

D.Generally speaking, the single parents needn’t worry since they are highly paid.

8.Which of the following diagrams correctly shows the rise of single parent families in the US from

1990 to 2000?

下列措施中，属于增大摩擦的是 [ ]

A.给笨重的旅行箱装上轮子

B.汽车轮胎表面做出凹凸不平的花纹

C.气垫船利用气体将船和水分离

D.经常给自行车轴加润滑油

女性，65岁。冠心病心绞痛史8年，无高血压史，夜间突发心前区疼痛8小时入院，入院时血压为150/90mmHg(20/12kPa)，经心电图检查，诊断急性前壁心肌梗死

上述患者出现频发室性早搏，有时呈短阵室速，最恰当的处理是（）。

A．静滴维拉帕米

B．口服美西律

C．静脉使用利多卡因

D．口服普鲁卡因酰胺

E．静点硝酸酯类药物

能水解尿素的对人致病的支原体是

A．肺炎支原体
B．生殖支原体
C．人型支原体
D．穿透支原体
E．解脲支原体

(41) is a protocol that a host uses to inform a router when it joins or leaves an Internet multicast group.

(42) is an error detection code that most data communication networks use.

(43) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.

(44) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.

(45) is an identifier of a web page.

（42）是（）

A. 4B/5B

B. CRC

C. Manchester Code

D. Huffman Code