(单选题)4: So involved with their computers ________ that leaders at summer computer camps often have to force them to break for sports and games. A: became the children B: become the children C: had the children become D: do the childr...

(单选题)48: Mr. Smith had an unusual _______ : he was first an office clerk , then a sailor , and ended up as a school teacher. A: profession B: occupation C: position D: career ...

(单选题)42: We are quite sure that we can ______our present difficulties and finish the task according to schedule. A: get away B: get across C: get off D: get over ...

(单选题)30: That was not the first time he ________ us. I think it’s high time we ________ strong actions against him. A: betrayed…take B: had betrayed…took C: has betrayed…took D: has betrayed…take ...

(单选题)24: ____ the success of the product depends on its good quality. A: Objectively B: Ultimately C: Absolutely D: Relatively ...

(单选题)18: The Timber rattlesnake is now on the endangered species list, and is extinct in two eastern states in which it once______ . A: thrived B: swelled C: prospered D: flourished ...

(单选题)12: There a canal was being built to ____ commerce between the two countries. A: allocate B: facilitate C: induce D: furnish ...

(单选题)50: Politically these nations tend to be ______,with very high birth rates but poor education and very low levels of literacy. A: unsteady B: unstable C: rational D: reluctant ...

(单选题)44: The archaeologist ____that the vase was 3500 years old. A: utilized B: estimated C: sustained D: upheld ...

(单选题)38: Dr.Smith was always ______the poor and the sick, often providing them with free medical care. A: tended by B: absorbed in C: reminded of D: concerned about ...