单选题After completing her usual morning chores, Linda found herself ______ tired.

单选题Man cannot go on increasing his number at the present rate. In the (56) 30 years man will face a period of crisis. (57) experts believe that there will be a widespread food (58) . Other experts think this is (59) pessimistic (悲观的), and that man can prevent things from (60) . (61) thing that man can do is to limit the (62) of babies born. The need (63) this is obvious, but it is not (64) to achieve. People have to be (65) to limit their families. In the countries of the population (66) , many people like big families. The parents think that this (67) a bigger income for the family and ensures there will be someone in the family who will look (68) them in old age. Several governments have (69) birth control policies in recent years. (70) them are Japan, China, India and Egypt. In some (71) the results have not been successful. Japan has been an (72) . The Japanese adopted a birth control policy in 1948. People were (73) to limit their families. The birth (74) fell from 34.3 per thousand per year to about 17.0 per year (75) present.

单选题John can help you with the food when he ________ cleaning the tables

单选题The old man，together with his neighbors，__________ the performance when it began to rain.

单选题The writer argues that in the foreseeable future the insurer of last resort for airline's terrorist risk will be

单选题Customers may also be permitted to ______ their current accounts for a short period in anticipation of a credit item coming in.

单选题I"d appreciate it if you could tell me how ______ the machine.

单选题In a materialistic and ______ society people"s interest seems to be focused solely on monetary pursuit.

单选题The book would have been more useful if a ______ of technical terms and abbreviation had been included.

单选题 Chronic high-dose intake of vitamin A has been shown to have ______ effects on bones.

单选题I am against children ______ to school before they are six.

单选题This passage deals mostly with ______.

单选题He gave me a lot of help in my work, so I have to ______ my success to him.

单选题A(n) ______ sentence is of doubtful meaning because it can be interpreted in more than one way.

单选题A strike in the mining industry is ______ to bring a shortage of coal in the near future. A. causing B. threatening C. resulting D. proposing

单选题I wandered through the cool ______ of the forest trees.

单选题The pilot made an unexpected ______ because of engine trouble.

单选题Steel is an alloy composed ______of iron and carbon.

单选题In spite of a problem with the faulty equipment, some very useful work was accomplished.

单选题I ______ on seeing the manager. The service in this hotel is terrible. A. insist B. persist C. affirm D. protest