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　　Black Americans have served with honor in every American military action, though this often not written in history books. Even though black men begged to be allowed to serve in the Revolution War, they served well. During the Revolution War a black man named Eastbrook captured Royal Army's General Prescott Newport and Peter Salem, a black, killed Major Pitcairn as he was enjoying his victory at Bunker Hill.

　　Though whites had long believed that blacks could neither command nor use firearms, blacks fought bravely. In 1863, William Carney received the Congressional Medal of Honor for his role in battles.

　　In World War Ⅰ, 40,000 black solders served with this French command. Johnson and Needham Robert were the first Americans to win the Croix de Guerre——France's top military award.

　　During World War Ⅱ over 40,000 black solders served in the army forces. Dories Miler, a black, was one of the first heroes in this war. At Pearl Harbor during Japanese attack, he shot down four planes. The black fighter pilots of Benjamin Davis, Jr. made themselves known as brave soldiers throughout the war.

(1)The main idea of the passage is that ________.

[　　]

A．Black Americans served bravely during the Revolutionary War

B．black Americans served under the French during the World War Ⅰ

C．more black Americans died than whites in wars

D．black Americans have served their country bravely in many wars

(2)Benjamin Davis. Jr. was ________.

[　　]

A．commander of a group of black fighter pilots during World War Ⅱ

B．give the Croix de Guerre, France's highest military award

C．awarded the Congressional Medal of Honor

D．a soldier who died in the World War Ⅱ

(3)We conclude from the passage that ________.

[　　]

A．there are more blacks than whites in the US army

B．black heroes are often written in history books

C．blacks went to serve in the wars because they had difficulty finding jobs

D．blacks love their country

(4)The passage suggests that ________.

[　　]

A．black slaves were forced to fight in the Revolution War

B．blacks didn't fight bravely enough

C．blacks didn't get great honor

D．history tells little of the contribution that blacks made to America's military history

My command of Chinese is not________yours.

　 A. as half as 　     B. so half good as

　 C. good as half as 　 D. half so good as

Miss Gogers taught physics in a New York school. Last month she explained to one of her classes about sound, and she decided to test them to see how successful she had been in her explanation. She said to them,“Now I have a brother in Los Angeles. If I was calling him on the phone and at the same time you were 75 feet away, listening to me from across the street, which of you would hear what I said earlier, my brother or you and for what reason?”

　Tom at once answered,“Your brother. Because electricity travaels faster than sound waves.”“That’s every good,”Miss Gogers answered; but then one of the girls raised her hand, and Miss Gogers said.“Yes, Kate.”

　“I disagree,”Kate said.“Your brother would hear you earlier because when it’s 11 o’clock here it’s only 8 o’clock in Los Angeles.”

1.Miss Gogers was teaching her class_________.

A.how to telephone 　    B.about electricity 　 C.about time zone 　  D.about sound

2.Miss Gogers raised this question because she wanted to know whether______.

　A.it was easy to phone to Los Angeles

　B.her student could hear her from 75 feet away

　C.her students had a good command of her lesson about sound

　D.sound waves were slower than electricity

3.Tom thought that electricity was _________.

　A.slower than sound waves   　B.faster than sound waves

　C.not so fast as sound waves  　D.as fast as sound waves

4.Kate thought Tom was wrong because _______.

　A.clocks in Los Angeles showed a different time from those in New York

　B.electricity was slower than sound waves

　C.Tom was not good at physics at all

　D.Tom’s answer had nothing to do with sound waves

5.Whose answer do you think is correct according to the law of physics?

　A. Tom’s 　     　B. Kate’s 　　C. Bath A and B 　　D. Neither A nor B

As a physician who travels quite a lot, I spend a lot of time on planes listening for that dreaded “Is there a doctor on board?” announcement. I’ve been   16  only once — for a woman who had merely fainted. But the   17  made me quite curious about how   18  this kind of thing happens. I wondered what I would do if   19  with a real midair medical emergency — without access   20  a hospital staff and the usual emergency equipment. So   21  the New England Journal of Medicine last week   22  a study about in-flight medical events, I read it   23  interest.

　　The study estimated that there are a(n)   24  of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not   25 ; fainting and dizziness are the most frequent complaints.  26  13% of them — roughly four a day — are serious enough to   27  a pilot to change course. The most common of the serious emergencies   28  heart trouble, strokes, and difficulty breathing.

　　Let’s face it: plane rides are   29 . For starters, cabin pressures at high altitudes are set at roughly      30  they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty   31 , but passengers with heart disease   32  experience chest pains as a result of the reduced amount of oxygen flowing through their blood.   33  common in-flight problem is deep venous thrombosis — the so-called economy class syndrome (综合症).   34  happens, don’t panic. Things are getting better on the in-flight-emergency front. Thanks to more recent legislation (立法), flights with at      35  one attendant are starting to install emergency medical kits to treat heart attacks.

The government-run command post in Tunis is staffed around the clock by military personnel, meteorologists and civilians. On the wall are maps, crisscrossed with brightly colors arrows that painstakingly track the fearsome path of the enemy.

　　What kind of invader gives rise to such high-level monitoring? Not man, not beast, but the lowly desert locust(蝗虫). In recent months, billions of the 3-inch-long winged warriors have descended on Algeria, Libya, Morocco and Tunisia, blackening the sky and eating up crops and vegetation. The insect invasion, the worst in 30 years, is already creating great destruction in the Middle East and is now treating southern Europe. The current crisis began in late 1985 near the Red Sea. Unusually rainy weather moistened the sands of the Sudan, making them ideal seedbed for the locust, which lays its eggs in the earth. The insect onslaught threatens to create yet another African famine. Each locust can eat its weight (not quite a tenth of an ounce) in vegetation every 24 hours. A good-size swarm of 50 billion insects eats up 100,000 tons of grass, trees and crops in a single night.

　　All ﹩150 million may be needed this year. The U.S. has provided two spraying planes and about 50,000 gal. of pesticide. The European Community has donated ﹩3.8 million in aid and the Soviet Union, Canada, Japan and China have provided chemical-spraying aircraft to help wipe out the pests. But relief efforts are hampered by the relative mildness of approved pesticides, which quickly lose their deadly punch and require frequent replications. The most effective locust killer dieldrin has been linked to cancer and is banned by many Western countries and some of the affected African nations. More than 5 million acres have been dusted with locust-killing chemicals; another 5 million will be treated by the end of June.

　　On May 30, representatives of Tunisia, Algeria, Libya, Morocco and Mauritania will meet in Algiers to discuss tactics to wipe out the ravenous swarms. The move is an important step, but whatever plan is devised, the locust plague promised to get worse before the insects can be brought under control.[来源:Zxxk.Com]

1.The main idea of the first sentence in the passage is that ______.

　 A. the command post is stationed with people all the time.

　 B. the command post is crowded with people all the time.

　 C. there are clocks around the command post.

　 D. the clock in the command post is taken care of by the staff.

2. The favorable breeding ground for the locust is ______.

　 A. rich soil.                               B. wet land

　 C. paces covered crops and vegetation        D. the Red Sea

3. People are alert at the threat of the locust because ______.

　 A. the insects are likely to create another African famine.

　 B. the insects may blacken the sky.

　 C. the number of the insects increases drastically.

　 D. the insects are gathering and moving in great speed.

4.Which of the following is true?

　 A. Once the pesticides are used, locust will die immediately.

　 B. Relief efforts are proved most fruitful due to the effectiveness of certain pesticides.

　 C. Dieldrin, the most effective locust killer, has been widely accepted in many countries.

　 D. Over 10 million acres of affected area will have been treated with locust-killing chemicals by the end of June.

5. The purpose for affected nations to meet in Algiers on May 30 is ______.

　 A. to devise anti-locust plans.

　 B. to wipe out the swarms in two years.

　 C. to call out for additional financial aid from other nations.

D. to bring the insects under control before the plague gets worse.