Howell believed the captain's failure to reduce speed was an irresponsible action.

A . self-reliance B . the strengthening of trade unions C . privatization D . the use of monetary policies to control inflatio

A．you should only do things for which you have the ability B．only important jobs are worth doing well C．you should only attempt worthwhile jobs D．anything you do should be done to your best ability

A．Right B．Wrong C．Not mentioned

A．drinking coffee was unpatriotic B．2000 insurance companies were set up hundreds of years ago C．Europeans were responsible for the existence of slavery D．coffee actually influenced the rise of business

A．mutated genes have a negative influence on Ashkenazim"s intelligence B．mutated genes have played a role in Ashkenazim"s intelligence C．the Ashkenazim"s high intelligence is caused by the mutated genes D．the Ashkenazim"s illnesses have greatly handicapped their performance 此题为多项选择题。

A.many teachers are opposedto the idea of being evaluated by the students B.students are opposed tothe idea of evaluating the teachers on their own C.students fear that theyare likely to be criticized by their teachers if they are to give theirassessments D.many teachers fear that theyare likely to criticize the students who have given their assessments

A．Palmdale. B．El Salvador. C．Panama. D．Los Angeles.

听力原文： The ancient Egyptians believed strongly in life after-death. They also believed that a person would need his body to exist in his afterlife. Therefore, they carefully preserved the body by treating it with spices and oils and wrapping it in a linen cloth. The wrapped body was then placed in a tomb. A body that is treated in this way is caned a mummy. Egyptian kings and nobles wanted to be certain that their mummies would be kept in safe places forever. They had great tombs built for themselves and their families. Many kings were buffed in secret tombs carved out of solid reek in places near Thebes called the Valley of the Kings. About eighty kings built towering pyramid-shaped stone tombs. These pyramids have become famous as one of the Seven Wonders of the Ancient World. One of the most amazing things about these pyramids is that they were constructed without using wheels or heavy equipment to raise the rocks. Egyptians did not learn about the wheel until long after the pyramids were built. Workmen used levels to get large blocks of stone on and off sledges and hauled them into places over long ramps built around the pyramids. (20) A．Kings of ancient Egypt. B．Ancient Egyptian nobles. C．The place where Egyptian kings were buffed. D．The preserved body of a dead person.

A．will cause a lot of people to move to the Rockies B．is not welcomed by most people C．will lead to a violation of personal privacy D．offers a lot of benefits to people

A．won the race by his own effort B．took a risk by agreeing to race C．was not given a fair chance in the race D．won the race by chance

A.women have to show theirbeauty through their looks B.beautiful clothes can makewomen more attractive C.women should lay moreemphasis on their owrl qualities D.women are more curiousabout new things than men

A.acceptable despite the criticism. B.harmful to the culture of research. C.subject to undesirable changes. D.unworthy of public attention.

A．has attracted much attention B．involves certain political factors C．shoulders too much responsibility D．has lost its real value in economy

Many researchers believe that the presence of RNA in brain cells is the biochemical basis of memory; that is, the presence of RNA enables us to remember. Because certain chemicals are known to inhibit the synthesis of RNA in the body, we can test this hypothesis. Animals that have learned particular responses can be injected with an RNA inhibitor and then tested for memory of the learned responses. Which of the following test results would most seriously weaken the case for RNA as the basis of memory？ A．After an injection of RNA inhibitor, a wide range of behaviors in addition to the learned responses were affected. B．After an injection of RNA inhibitor, animals that had not consistently been giving the learned responses were able to give them consistently. C．After injections of RNA inhibitor, some animals lost memory of the learned responses totally but others lost it only partially. D．After a small injection of RNA inhibitor, animals responded well, but as the size of the injection increased, they gave fewer of the learned responses. E．After an injection of RNA inhibitor, animals could not learn a new response.