单选题 American doctors say that mothers who smoke before their babies are born may slow the growth of their babies' lungs. They say reduced lung growth could cause the babies to have breathing problems and lung illness later in life. Doctors in Boston, Massachusetts studied 1,000 children. The mothers of some of the children smoked, the other mothers did not. Doctors found that the lungs of the children whose mother smoked were 8% less developed than the children whose mothers did not smoke, and that the children whose mothers smoked developed 20% more cold and breathing illness than other children later in life. Another recent study found that children had a greater chance of developing lung cancer if their mothers smoked. The study also showed that the danger of lung cancer increased only for sons and not for daughters, and that the father's smoking did not affect a child's chance of developing lung cancer.

单选题A.B.C.

单选题在本节中，你将听到15个对话。每个对话有一个问题。请从[A]、[B]、[C]三个选项中选出答案，并标在试卷的相应位置。每段对话后有15秒钟的停顿，以便回答问题和阅读下一问题及其选项。每段对话读两遍。

单选题Which is the seventh largest country in the world?

单选题It is so cold here. ______ I close the window?

单选题Why do factories want to know how people feel about different colors?

单选题{{B}}第一节 图片判断{{/B}} 在本节中，你将听到10个句子，每句话配有[A]，[B]，[C]三幅图片，清选择与句子内容相符的一幅图片，并标在试卷相应的位置。每句话后有15秒钟的停顿，以便选择图片并看下—组图片。每句话读两遍。

单选题She looks very ______ with her work.

单选题Mary usually gets up early, ______ she?

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单选题No one knows ______.

单选题They have ______ their friend for twenty minutes.

单选题These books must not be taken ______ from the library.

单选题______ is your father, an engineer or a professor?

单选题There ______ one bed, two chairs, a table and a bookshelf in my bedroom. A. are B. is C. be