制作自助具时应遵循如下原则错误的是（）。 A.应能达到使用目的 B.简便、易制作、易

根据汉语提示完成句子

1. If you have any difficulty, please                        （让我知道）.

2. We always                                         （帮农民种树）when spring comes.

3. Lucy wants to                        （同……交朋友）more boys.

4. I passed the English exam                （由于）your help.

5. It                 （看来）the book is too difficult for us.

用户称自己录音的同时从耳麦中听不到自己的声音，但回放录音时又可以听到声音，如何调节？（）

A.双击屏幕右下角的小喇叭，点击选项_属性，选中麦克风项，点确定，确保麦克风下的“选择”前有对勾

B.在音量控制中将麦克风的静音前对勾去掉，并确保滑块不是最低

C.录音时无法当时听到声音

管理者如何使小道消息传播方式为己所用?

There are new findings that not enough sleep may cause people to gain weight. Researchers say a lack of sleep can produce hormonal(激素的) changes that increase feelings of hunger.

In one study, researchers in the United States examined information on more than 1000 people. The people had taken part in a long-term study of sleep disorders.

Some people slept less than five hours a night. They had 15 percent higher blood levels of a hormone called ghrelin than people who slept eight hours. And they had 15 percent less of the hormone leptin. Experts say ghrelin helps make people feel hungry; leptin makes you feel full.

The scientists say these hormonal changes may be a cause of obesity in Western societies. They note the combination that sleep limitation is common and food is widely available.

The results were not affected by how much people exercised. People who are awake longer have more time to burn energy. But the researchers say loss of sleep may increase hunger especially for high-calorie foods, so people gain weight. It seems that, for survival, the body may be designed to store more fat during times with less sleep.

Researchers from Stanford University in California and the University of Wisconsin did the study. They found that the best amount of sleep for weight control is 7.7 hours a night.

The Public Library of Science published the findings in its journal Medicine . Internet users can read the full study, free of charge, at plos. org.

小题1:Not enough sleep can cause obesity by ______.

A．burning more of your energy

B．making you want to eat more food

C．keeping you from doing exercise

D．helping you feel great without food小题2:Which would be a point supported by the reported findings?

The more you sleep, the farther away you are from obesity.

Those who don’t sleep at all are the most likely to put on weight.

Sleeping contributes more to obesity than eating.

It’s not wise to use sleep hours for exercise.

小题3:When you sleep 7.7 hours a night, you will ______ .

have your ghrelin level rise and leptin level drop

have your leptin level rise and ghrelin level drop

have your ghretin and leptin levels properly balanced

have your hunger increase and your weight decrease

小题4:The writer wrote this passage to _______ .

A．make a news report

B．offer a piece of medical advice

C．make an advertisement

D．keep a record of the old findings小题5:You can read the findings________.

A．Only on the Internet

B．only in Medicine

C．Both on the Internet and in Medicine

D．Neither on the Internet nor in Medicine

胃酸缺乏容易造成哪种营养素缺乏？（）

A.蛋白质

B.铁

C.维生素A

D.维生素E

E.不确定