It is uncertain _______ side effect the medicine will bring about,although about two thousand patients have taken it.
A. that B. what C. how D. whether
It is the ability to do the job ________matters not where you come from or what you are.
A. which B. that
C. what D. where
I’m afraid he’s more of a talker than a doer, which is_____ he never finishes anything.
A. that B. when C. where D. why
I was first officer at an airline. One Christmas Eve, I was checking instruments in ______for my last flight of the day _______I heard a noise behind me. I looked ______my shoulder. Just outside the cockpit(驾驶舱) doorway was a boy of about nine ______at the cockpit. At my glance he started to _______“Come on in here,” I called. The boy stepped _______into the cockpit. “My name’s Chad.” I said, slicking out my hand. With a shy smile he put his hand in________, “I’m Sam.”
The captain would be in any minute. Sam looked so _______that I didn't want to cut short his fun. I told Sam the _______of each button. Finally Captain Jim came aboard. I_______Sam to Jim, who gave him a broad smile. “You ever _______an airplane before, Sam?” Jim asked. Eyes wide, Sam _____his head. Following my______, he carefully pressed a button as big as his hand to start the _______, which hummed (发出嗡嗡声) to life. Sam looked like he was about to cry with ______. We started up the other engine, ______, and arrived in Macon about 40 minutes later.
Early Christmas morning, Sam’s mother came by and ______ a tin of cookies with a note of thanks. Jim looked at it, ______, and read it aloud, “Thank you for what you’ve done. Sam has been dreaming about becoming a pilot. _________, he’s got cancer…”
A small _______deed that one does can make a big difference to someone else’s life.
1.A. time B. return C. preparation D. exchange
2.A. after B. when C. as if D. even though
3.A. over B. around C. above D. from
4.A. glaring B. aiming C. shouting D. staring
5.A. get in B. turn away C. run out D. set off
6.A. cautiously B. unexpectedly C. desperately D. deliberately
7.A. his B. him C. me D. mine
8.A. thrilled B. worried C. afraid D. confident
9.A. type B. function C. problem D. regulation
10.A. carried B. reported C. introduced D. directed
11.A. saw B. boarded C. started D. visited
12.A. raised B. bowed C. nodded D. shook
13.A. signals B. instructions C. example D. schedule
14.A. flight B. journey C. button D. engine
15.A. happiness B. anxiety C. sympathy D. fright
16.A. gave up B. pulled over C. took off D. went out
17.A. took B. made C. bought D. left
18.A. sighed B. sobbed C. breathed D. relieved
19.A. Strangely B. Eventually C. Carelessly D. Unfortunately
20.A. heroic B. risky C. kind D. honest
Both men and women are living longer these days in industrialized countries.1.In general, they can expect to live six or seven years more than men. One reason for this is biological.
One important biological factor that helps women live longer is the difference in hormones（荷尔蒙）between men and women. 2.Between the ages of about 12 and 50, women produce hormones that are involved in fertility(生育能力). These hormones also have a positive effect on the heart and blood flow. In fact, women are less likely to have high blood pressure or to die from heart attacks.
3.They help the body defend itself against some kinds of infections. This means that women generally ger sick less often and less seriously than men. The common cold is a good example: women, on average, get fewer colds than men.
4.Scientists are still not exactly sure how influence aging, but they believe that they do. Some think that a woman’s body cells have a tendency(倾向)to age more slowly then a man’s. Others think that a man’s body cells have a tendency to age more quickly. 5.
A. However, women, on average, live longer.
B .The biological factor plays an important part.
C. Women are also helped by their female genes.
D. The female hormones also protect the body in another way.
E. Recent research seems to support both of these possibilities.
F. Therefore, women are more healthy than men and can live a better life.
G. Hormones are chemicals which are produced by the body to control carious body functions.
A new eight-kilometre road is under construction that links the port area with the motorway system. It is expected to carry 20,000 trucks and cars a day, which greatly reduces the overcrowded traffic in the center of the city. As part of the project, two four-kilometre road tunnels are being built below the central area of the city, one for traffic to the north and the other for traffic to the south .The two tunnels are about 20 metres below the surface and are 12 metres wide, providing for two lanes of traffic in each direction.
In the upper part of the tunnel two air-conditioning pipes remove the waste gas of trucks and cars and keep the quality of air inside the tunnel. The lighting is at the top of the tunnel, practically at its highest point. There will also be electronic signs at frequent intervals (间隔). They show traffic conditions ahead, and can be seen clearly by drivers. The wall is made up of four main elements, which include a waterproofing covering and , on the inside of the tunnel , a concrete lining (混凝土衬砌).
Each tunnel is roughly round and the lower part of the tunnel is somewhat flat .The surface of the road lies on the base, which is made of concrete and steel. The drainage system (排水系统), just below the road surface on one side, removes any extra liquid, particularly water. In the event of fire, the fire main, which is made of steel, pipes water to many fire hydrant stations at regular intervals along the length of the tunnel. The fire main is at the side of the tunnel, and at the level of the road surface. Other systems in the tunnel will include emergency phones .
1.Each of the tunnels under construction is ________.
A. eight kilometers long and twenty metres wide
B. four kilometers long and six metres wide
C. four kilometers long and twenty metres wide
D. eight kilometers long and six metres wide
2.Which part of the tunnel in the diagram is used to pipe out extra water?
A. 1 B. 3
C. 5 D. 6
3.Driving in the tunnel, one can know the traffic conditions ahead through ________.
A. the electronic signs B. the lights
C. the trucks and cars D. the emergency phones
4.The passage is mainly about ________.
A. the construction of a road B. the design of a road
C. the construction of two tunnels D. the design of two tunnels
