A．boyfriend
B．launderer
C．tailor
D．explorer
47、 A good title for this passage would be________.
A．Life in Early America
B．What Happens to the Brokenhearted
C．The History of the Tomato
D．Vegetables in Our Diet
48、根據(jù)下面內(nèi)容，回答48-67題：
Many people are wondering if it is safe to talk on the phone while driving. There have been quite a few accidents while drivers were talking on the phone. Some research is being done to find out if driving while talking on the phone is dangerous.
When there is a ear accident police officers will find out if any of the drivers were using a cell phone. They will write this information in a report. The information will be saved and later studied.
There have been some very bad car accidents caused by drivers being distracted by cell phones.
Drivers sometimes forget to watch the road carefully when they are using their phones. Not paying attention to the road can be dangerous, even deadly.
It is important for drivers to focus on the road. They need to pay attention to what is going on around them. They might need to stop or swerve quickly.
People want to make sure that the roads are safe for everyone. Studies will be done using the information police officers collect at accidents. Maybe someday this information will lead to laws about driving and using cell phones.
While driving, drivers must keep an eye on what is happening_________.
A．in other cars
B．on the phone
C．a(chǎn)round them
D．a(chǎn)t home
49、 Driving and talking on the phone at the same time could be _________ , research says.
A．difficult
B．dangerous
C．illegal
D．fun
50、 What will police officers do after a car accident? They will_________.
A．send the driver to the hospital
B．check how seriously the car is damaged
C．do the research on the car accident
D．find out if a cell phone is used
51、 The studies are based on_________.
A．the security people get on the road
B．the accidents caused by drivers
C．the law made for using cell phone
D．the information collected from the accidents
52、根據(jù)下面內(nèi)容，回答52-71題：
How many things can you see in the night sky? A lot! On a clear night you might see the Moon,some planets, and thousands of sparkling stars. You can see even more with a telescope.
But scientists believe there are some things in the sky that we will never see. We won't see them with the biggest telescope in the world, on the clearest night of the year.That's because they're invisible. They're the mysterious dead stars called black holes.
As a star's gases burn, they give off light and heat. But when the gas runs out, the star stops burning and begins to die.
As the star cools, the outer layers of the star pull in toward the center. The star squashes(擠壓 )into a smaller and smaller ball. If the star was very small, the star ends up as a cold, dark ball called a black dwarf. If the star was very big, it keeps squashing inward until it's packed together tighter than anything in the universe.
Imagine if the Earth were crushed until it was the size of a tiny marble. That's how tightly this dead star, a black hole, is packed. What pulls the star in toward its center with such power? It's the same force that pulls you down when you jump--the force called gravity. A black hole is so tightly packed that its gravity sucks in everything--even light. The light from a black hole can never come back to your eyes. That's why you see nothing but blackness.
So remember: Scattered in the silent darkness are black holes--the great mystery of space.
According to the article, what causes a star to die?
A．As its gases run out, it cools down.
B．It collides with other stars.
C．It can only live for about a million years.
D．As it gets hotter and hotter, it explodes.
53、 Which word has the same meaning with the word "mysterious"?
A．ordinary
B．bright
C．strange
D．common
54、 What happens after a star dies?
A．It becomes invisible.
B．It fails to Earth.
C．It burns up all of its gases.
D．It becomes brighter and easier to see.
55、 Why can't you see light when you look at a black hole?
A．Because most black holes are so far away.
B．Because the gravity of a black hole is so strong that it sucks the light inward.
C．Because as the star's gases burn, it stops giving off heat and light.
D．Because as a star cools, its outer layers pull in toward its center.
網(wǎng)校：2015年成人高考VIP輔導(dǎo)班全新上線 課程免費試聽！
