here shows the returns of firms x and y under different states of economy. which of the following results regarding the （expected return, risk) of the two assets is correct？

Which of the following shows good table manners? 查看材料

A.Talking with your mouth full.

B.Putting bones on your plate.

C.Putting your elbows on the table.

D.Chewing with your month open.

Which of the following shows good table manners?

According to Sapir-Whorf Hypothesis, which of the following is NOT true?

A．Different languages offer people different ways of expressing the world around.

B．Language filters people's perception and the way they categorize experiences.

C．Language patterns determine or influence people's thinking and behaviour.

D．Language structure people habitually use shows no influence on people's behaviour.

Which of the following shows the proper pronunciation of "whose" in the sentence "‘In America， Li stayed in a family whose landlady could help him with his English"?

A./hus/

B./huz/

C./hu:s/

D./hu:z/

Which of the following is not true?

A．In some places people pretend not to see you although they are polite.

B．It is good manners to give a burp when you've had enough.

C．Sometimes manners are different in different places in the same country.

D．Good manners are ways of showing that people are friendly to each other.

Which of the following diagrams (图解) shows the correct relation? ●: prize ▲: personal lucky number ★: splash ■: cars

[A] ■→▲→★→●

[B] ●→★→■→▲

[C] ★→▲→●→■

[D] ■→★→▲→●

Which of the following statements about the research is TRUE?

A．Some researchers are dubious of the feasibility of the research.

B．Private enterprise doesn't show the interest in the research.

C．There should be a balance between caution and audacity.

D．Many researchers have given up their research.

Which of the following best describes the organization of the whole passage?

A．The author tells his story of learning Arabic chronologically.

B．By contrasting different means of teaching by Mr. Beheit and Mr. Ahmed, the author reveals his joys and sorrows on the way of learning a foreign tongue.

C．The author describes possible difficulties of learning a tough foreign language before he illustrates how he achieves success in doing so.

D．The author gives out his outlook of learning a foreign tongue through details of his own pains and gains in the learning process.