单选题The Untied States and Canada are lands of ______ except for the Indians, who are the only tree natives.
单选题You would be ______ a risk to let your child go to school by himself.
单选题Whether one is a romanticist, a rationalist, a classicist, or one in the______hold of naturalism, he accepts words describing each as holding the same range of meaning for all views, even including that of existentialism.
单选题An important property of a scientific theory is its ability to ______ further research and further thinking about a particular topic.
单选题He set the engine of the car ______.
单选题The loyalty of dogs to their masters has earned ______ "man's best friend".
单选题Educational policies made______the hoof by successive secretaries of state are the main reason for low teacher morale.
单选题The guards were accused of______ the prisoners in order to make them confess.
单选题Individuals have Uapplied/U "positive thinking" either Uto/U particular external circum-stances or to some particular habit or character defect.
单选题Please don't ______ too much on the painful memories. Everything will be all right. A. hesitate B. finger C. retain D. dwell
单选题While his efforts were tremendous the results appeared to be very ______. A. trigger B. meager C. vigor D. linger
单选题Science has made great______ during the past 20 years.
单选题The step was announced by the secretary of state in person and given maximum______
单选题Customer service stands out as the area where WestNet falls most behind, with 43.8 percent of its users in the survey saying "its security does not come______".
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单选题The soldiers who______ from the army were severely punished.
单选题I hope that you'll be more careful in typing the letter. Don't______anything. A. lack B. withdraw C. omit D. leak
单选题Sometimes a dictionary designates a noun as attributive, which means that it can be used to describe another noun or name its attributes. A. conveys B. defines C. indicates D. explains
单选题The nation-wide economic slowdown worsened the ______ between employer and employee.
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