面部的主要感觉神经是（） A.面神经 B.三叉神经 C.耳颞神经 D.舌神经 E.舌

水稻进入有效分蘖临界叶位，11叶品种（）叶，预计田间茎数达计划茎数（）时，在（）叶期开始晾田控蘖，控制（）叶的同伸分蘖发生。

操作失误是计算机操作中不可避免的，在教学中几乎每堂课都能见到学生犯各种各样的操作错误，在教学中应如何对待学生的操作失误？

华为Metro1000设备中，支持的SDH群速率为（）.

A、STM-4

B、STM-16

C、STM-1

D、STM-N

Every newborn baby is dealt a hand of cards which helps to determine how long he or she will be allowed to play the game of life. Good cards will help those who have them to have a long and healthy existence, while bad cards will bring to those who have them terrible diseases like high blood pressure and heart disease. Occasionally, cards are dealt out that doom their holders to an early death. In the past, people never knew exactly which cards they had been dealt. They could guess at the future only by looking at the kind of health problems experienced by their parents or grandparents.

Genetic testing, which makes it possible to find dangerous genes, has changed all this. But, until recently, if you were tested positive for a bad gene you were not obliged to reveal this to anyone else except in a few extreme circumstances. This month, however, Britain became the first country in the world to allow life insurers to ask for test results.

So far, approval has been given only for a test for a fatal brain disorder known as Huntington’s disease. But ten other tests (for seven diseases) are already in use and are awaiting similar approval.

The independent body that gives approval, the Department of Health’s genetics and insurance committee, does not have to decide whether the use of genetic information in insurance is ethical. It must judge only whether the tests are reliable to insurers. In the case of Huntington’s disease the answer is clear-cut. People unlucky enough to have this gene will die early, and cost life insurers dearly.

This is only the start. Clear-cut genetic answers, where a gene is simply and directly related to a person’s risk of death, are uncommon. More usually, a group of genes is associated with the risk of developing a common disease, dependent on the presence of other genetic or environmental factors. But, as tests improve, it will become possible to predict whether or not a particular individual is at risk. In the next few years researchers will discover more and more about the functions of individual genes and what health risks — or benefits — are associated with them.

The author’s purpose in writing the passage is（）

A. to indicate the way genetic testing works

B. to show the power of one’s genetic makeup

C. to introduce genetic testing and its function

D. to reveal the influence of environment on genes

以下属于具体问题具体分析方法的是

A．因地制宜
B．因时制宜
C．有的放矢
D．坚持原则