单选题When an organism is completely encapsulated and preserved, it becomes a fossil, therefore turning into evidence of things that once lived.
单选题It's terribly hot in the office; we're going to have an air-conditioner ______ tomorrow.
单选题I promise never to get drunk______．
单选题He based his holiday plans on the______that his girlfriend was coming with him.
单选题He______to return earlier than 3 o'clock.
单选题Even at an early stage the school felt that she ______ a good chance of passing her exams. A. stood B. gained C. possessed D. took
单选题Language learning usually ______ conscious imitation.
单选题Although we don't feel satisfied with the election results, we have to become reconciled ______the decision made by our fellow countrymen.
单选题He was frightened by______lightning. A．bolt of B．a piece of C．a flash of D．a
单选题He masked his fear by a show of confidence. A. demonstrated B. betrayed C. put up with D. concealed
单选题American Indian languages, which differ widely, tended to group many units of meaning into multisyllabic words. A. all tend B. and tend C. to tend D. tending
单选题Erosion that is a slow process, but it constantly changes the features on the surface of the earth.
单选题Corporations and labor unions have______great benefits upon their employees and members as well as upon the general publiC．
单选题When ______ at the door, she was given a warm welcome.
单选题I cannot thank you very much for your kindness, I owe my success to you.
单选题Mountain Everest, the peak where is hardly seen, is the highest mountain in the world.
单选题Hardly a week goes by without some advance in technology that would have seemed
incredible
50 years ago.
单选题World War Ⅱ is commonly acknowledged ______ some of the 20th century's most notable poetry.
单选题Apart from its impact on commercial and industrial structures and procedures, the rapid development of the global communications system is apparently ______ barriers between peoples at a pace neither governments nor international agencies can hope to control.
单选题According to the International Bank for Reconstruction and Development in 1995, the wealthiest 10 percent of China's population received 30.9 percent of the income, while the poorest 10 received only 2.2 percent. Such ______ in income and wealth are found in both cities and rural areas.