单选题Howmuchistheskirt?

单选题She would rather stay at home than ______ with John.

单选题This article tells that the Speech Machine's system comes from ______ technology.

单选题{{B}}C{{/B}} We experience different forms of the sun's energy every day. The sun is the major source of energy for our planet. It causes the evaporation(蒸发)of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. Much of the energy that comes from the sun never reaches the earth's surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the earth's surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food. Many gases found in the atmosphere actually reflect heat energy escaping from the earth's surface back to the earth. These gases act like the glass of a greenhouse in that they allow energy from the sun to enter but prevent energy form leaving. They are therefore called greenhouse gases. When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. Dark-colored surfaces, such as dark soil or forest, absorb more energy.

单选题How foolish it is______her to believe ______such a man's honesty! A. of... in B. for.., in C. for.., on D. of... on

单选题The underlined part "in contrast" in this passage means______.

单选题WhatistheEnglishproblemwiththeman?

单选题If you"re among the 24 million Americans who work from dusk to dawn, don"t underestimate the physical and emotional costs of punching the clock in the dark. Compared with day workers, night workers are five times more likely to get stomach diseases, twice as likely to smoke cigarettes or use stimulants, and at higher risk for high blood pressure, heart. attack, and breast cancer. And if you have kids, your divorce risk is three to six times higher than normal. "You"re out of sync with everything and everybody," says Acacia Aguirre, MD, PhD, author of an eye-opening new report. Your biological clock is thrown off, too. How to survive: "A healthy lifestyle matters even more," Aguirre says. "Exercise, limit coffee, and fit in 7 to 8 hours of sleep per day."

单选题People will never forget the dates of these three events life, because ______.

单选题-Who is late this time -______you ask Susan, of course.

单选题

单选题Whatistheprobablerelationshipbetweenthespeakers?

单选题He gained his ______ by printing ______ of famous writers.

单选题The spy was caught ______ though he died from wounds the next day.[A] living[B] alive[C] live[D] lived

单选题Michael would most enjoy ______ , where he can go in winter.

单选题Betty saved her money ______ she might buy an MP3 player.[A] so as[B] so that[C] even if[D] as if