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有如下程序: #include<iostream> using namespace std; class Complex { double

A. (1,-2)
B. (2,3)
C. (3,5)
D. (3,1)

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All things are made up of atoms. When(52)of an atom travels at almost the speed of light(53)we put more energy into it to increase the speed, it begins to in crease in mass. The energy that makes it travel fast cannot make it travel(54)the speed of light—nothing(55)light can travel that fast- so the energy goes into the thing(56)and increases its mass. Energy(57)into mass.
Why is the theory called the theory of relativity? A thing that is relative depends upon(58)else to identify it or to define it. In relativity theory we identify or define mass, time, and length(59)to the speed of light.
When something is at rest, it looks(60)in length. However, when it travels at almost the speed of light, it becomes(61). Time also changes. However, the change in time is(62)to the change in length. The length of a thing becomes short(63)time becomes long.
If you want to(64)young, relative to a friend, take a trip in a spaceship that travels at(65)the speed of light. And, although time and heartbeat seem ordinary to you in the spaceship, when you return, look at your friend; Relative to you, he or she is old.

A. prefers
B. relates
C. belongs
D. adheres

The stream-rounded pebbled and Stone-Age axes which were found along the ancient river banks show that ______.

A. an early human civilization once existed along the old river banks
B. ancient people didn't know how to make weapons
C. most species of animals in Sahara have disappeared
D. early humans were good at fighting with sharp weapons

The rate of cancer of stomach and esophagus in Linxian is the highest in China.

A. Right
B. Wrong
C. Not Mentioned

What did Price not do during her research?

A. She rented a Beechcraft.
B. She used her sensing eqttipment aboard the Beechcraft.
C. She collected samples of pollutants on the Northwest coast for further tests.
D. She tested quantities of chemicals in the air.

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