The question whether there is life on Mars (火星) has made the public think a lot for more than a century. The closest look showed Mars to be a dusty, cold world, covered by air too thin to breathe. A British spaceship and Europe's Mars spaceship plan to land on Mars or enter orbit (轨道) around it. One of the NASA’s (美国宇航局) spaceships is expected to land on January 3, the other is going to land on the opposite side of Mars on January 24. Since 1960, over twenty spaceships sent to Mars have failed. Most have been lost on flying up or landing because those are the most difficult times of any flights. Scientists wanted to find out whether there was water in Mars. In October, a team of scientists reported that Mars had been a dry wasteland. But weeks later, a second team reported differently that they had found some marks showed clearly that they were made by the rivers. Such marks told us that Mars was a warmer place billions of years ago — just as life first appeared here on Earth. Scientists at once raise a question: if what they said is true, what happened on Mars? Then what about the earth?

1.Which is right about Mars?

A.It’s cold without dust.

B.There is no water or air.

C.It’s warm with some thin air.

D.It’s a dusty, cold world almost without air.

2.Two NASA’s spaceships _______________.

A.will land on the different sides of Mars

B.will land on the same day

C.will enter orbit around Mars

D.will land with a man

3.The most difficult times of a flight are _______________.

A.taking off

B.flying up and arriving

C.entering the orbit and landing

D.leaving the earth and entering the orbit

4.A team of scientists reported that there might be_____________ in Mars.

A.nothing but air

B.nothing

C.water billions of years ago

D.thick air and lakes

5.What are scientists worried about when they raise the question?

A.Life disappeared on Mars.

B.Spaceships can’t land on Mars.

C.The air on the earth gets less and less.

D.The earth might be changed like Mars

Taken each May by students all over the world, the AP Exam is the final step you take after a year of hard work in an AP class. These exams are designed to measure how well you’ve mastered the content and skills of the course — a successful score could even earn you credit in college.

Test Date: May 4, Monday

Morning (8 AM): AP Chemistry AP Environmental Science

Afternoon (12 PM): AP Psychology

Test Date: May 5, Tuesday

Morning (8 AM): AP Calculus AB AP Calculus BC

Afternoon (12 PM): AP Seminar AP Chinese Language and Culture

Test Date: May 6, Wednesday

Morning (8 AM): AP English Literature and Composition

Afternoon (12 PM): AP Japanese Language and Culture AP Physics 1: Algebra(代数)-Based

Test Date: May 7, Thursday

Morning (8 AM): AP Computer Science A AP Spanish Language and Culture

Afternoon (12 PM): AP Art History AP Physics 2: Algebra-Based

Test Date: May 8, Friday

Morning (8 AM): AP German Language and Culture AP United States History

Afternoon (12 PM): AP European History

What to Bring to the Exam Room

You want to be prepared with items such as No. 2 pencils for your multiple-choice answer sheet, black or dark blue pens for free-answer questions in most exams, and your government-issued or school-issued photo ID. A calculator is allowed on specified (指定的) exams.

What NOT to Bring to the Exam Room

You don’t want to bring any electronic equipment or communication devices, like cell phones, smart phones or anything else that can connect the Internet, any cameras or other photographic equipment, or even any watches that have an alarm. You may not have any food or drink in the exam room, including bottled water.

1.When is the test time for AP English Literature and Composition?

A.At 12 pm on Tuesday. B.At 8 am on May 6.

C.At 12 pm on Friday. D.At 8 am on May 7.

2.What exam can you take on the afternoon of May 8?

A.AP Art History. B.AP Environmental Science.

C.AP Computer Science A. D.AP European History.

3.What are you required to bring to the exam room?

A.Your school-issued photo ID. B.An electronic watch.

C.Your cell phone. D.Photographic equipment.

4.What are you NOT allowed to bring to the exam room in all AP exams?

A.No 2 pencils. B.Black pens. C.Bottled water. D.A calculator.

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