单选题It has been a magnificent evening. I ______.

单选题It has been more than six months since we had the opportunity to service your car, and we"ve missed yon. So, we are inviting you bring your car into our shop for a free inspection and adjustment. We hope that you will accept our offer. We have set aside the hours between 8:00 A.M. and 1:00 P.M., Monday through Friday for your convenience.

单选题The company's cost peaked at USS10 million in June before dropping drastically down to US$3 million in October.A．之前公司成本在10月份为300万美元，现在6月份又回升至1000万美元。B．公司成本在6月达到顶峰，即1000万美元，然后急剧下降，到10月降为300万美元。C．公司成本的最高值出现在6月，即1000万美元，然后在10月前狂降至300万美元。D．公司6月的成本值为1000万美元，10月的成本值为300万美元。

单选题The ______ of freedom is eternal vigilance (警惕).

单选题She wishes that she ______ your advice.

单选题Neither of us ______ the experience of studying abroad.

单选题He is mentioned in the chapter and also in ______that proceeds.

单选题The new staff didn"t know how to use the system ______ I explained it to him yesterday.

单选题I have been instructed by my agent that you owe me five dollars.A) 我被我的代理告知你还欠我五美元。B) 我的代理指导我应该偿还你五美元。C) 我的上级告诉我你还欠我五美元。D) 我的上级指导我说我应该尽快偿还你五美元。

单选题The representative of the company demanded that part of the agreement ______ revised.

单选题A man cannot be really happy if what he enjoys doing is ignored by society as of no importance．

单选题He didn't know ______ to express her ideas in English clearly in public. A. which C. why B. what D. how

单选题The United Nations, an accepted authority on population levels and trends, estimates that the world population reached 5.3 billion in 1990, and is increasing annually by more than 90 million persons. The rate of increase, 1.7 percent per year, has fallen below the peak rate of 2 percent per year attained by 1970. However, absolute yearly increments are not expected to start declining until after the year 2000. Estimates of world population before 1900 are based on fragmentary (不全的；不完整的) data, but scholars agree that average population growth approached approximately 0.002 percent per year. Growth was delayed and influenced by climate, food supply, disease, and war. Starting in the 17th century, great advances in scientific knowledge, agriculture, industry, medicine, and social organization made possible substantial increases in population. Inanimate (无生命的) energy gradually replaced human and animal labor. People slowly acquired the knowledge and means to control disease. All continents shared in a five-time population increase over a 300-year period--from about 500 million in 1650 to 2.5 billion in 1950--but increases were most obvious in regions where new technologies were devised and applied. Beginning about 1950, with improvements in water supplies, sewage (下水道里的污物) -disposal facilities, and transportation networks, agricultural yields increased, and deaths from infectious and parasitic diseases greatly declined. Life expectancy at birth in most developing countries increased from about 35-40 years in 1950 to 61 years by 1990.

单选题In the meantime, the question facing business is whether such research is ______ the costs.A) worthyB) worth ofC) worthD) worthwhile

单选题No modestly educated adult can fail to be upset by such an experience.A) 没有略受教育的成年人会为这样的经历难过。B) 略受教育的成年人没有谁不会为这样的经历难过。C) 略受教育的成年人都不会为这样的经历难过。D) 不是所有受过教育的成年人都会为这样的经历难过。

单选题The article gives us a good advice about how to evaluate your child's work at home. That is

单选题Airline companies are responsible for transporting your luggage. If you cannot recover it at the point of arrival, you must inform the airline immediately. They will carry out the necessary search, if the luggage is recovered, it will be delivered to your place of residence. If you wish to insure your luggage, you may do so at your own expense.

单选题The footsteps ______ his return.

单选题Goods sold at lower prices are not necessarily popular items.

单选题We can not be too careful in performing operation. A. 我们做手术越仔细越好。 B. 我们做手术时不能太仔细。 C. 我们手术试验达不到太仔细的程度。 D. 我们做手术时不得不很仔细。