His backache is only _________ for not w

题型:选择题

问题:

His backache is only _________ for not watering the flowers.[ ]

A. a reason        

B. a cause      

C. an excuse      

D. reasons

考点:不定冠词可数名词及其单复数
题型:选择题

In your project,you conducted communications requirements analysis to determine sum of information needs for all stakeholders.You have determined and limited who will communicate with whom and who will receive what information.One factor that you considered while doing communications requirements analysis is that for your project,the number of communication channels______.

A.increases in direct proportion to number of people

B.decreases in inverse proportion to number of people

C.increases in exponential proportion when number of people increases

D.none of the above number of communication channels depends on the type of your project

题型:选择题

实验室中运用诺贝尔化学奖的研究成果,可依据生物发光现象检测超微量钙的存在.这里的“钙”是(  )

A.原子

B.元素

C.分子

D.单质

题型:选择题

氨甲蝶呤可用于治疗白血病的原因是其可以直接()。

A.抑制二氢叶酸还原酶

B.抑制DNA的合成酶系的活性

C.抑制蛋白质的分解代谢

D.阻断蛋白质的合成代谢

E.破坏DNA的分子结构

题型:选择题

男,38岁,上臂肿块1年,结合图像,最可能的诊断是()

A.未见异常

B.肌内脂肪瘤

C.血管瘤

D.肌内感染

E.肌内囊肿

题型:选择题

50岁妇女普查时发现子宫增大如6周妊娠大小,B超检查确诊为子宫肌瘤,最好的处理方案是( )

A.子宫全切
B.子宫颈全切
C.定期复查
D.雌激素治疗
E.孕激素治疗

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