第7题: [单项选择]Thomas Fuller {{U}}was{{/U}} so {{U}}skilled at{{/U}} mathematics that he was known in the eighteenth century as the “Virginia Calculator.” A. fascinated by B. articulate about C. proficient in D. suspicious of 参考答案:C
第8题: [单项选择]下列关于滋养层细胞的叙述，不正确的是（） A. 囊胚滋养层细胞将来发育成胎盘和胎膜 B. 可以用滋养层细胞做DNA分析性别鉴定 C. 囊胚滋养层细胞就是将来原肠胚的外胚层 D. 滋养层细胞沿透明带内壁扩展和排列 参考答案:C
第29题: [单项选择]Only by shouting at the top of his voice______. A. he was able to make himself hear B. he was able to make himself heard C. was he able to make himself near D. was he able to make himself heard 参考答案:D 答案解析:[分析] only位于句首句子用倒装语序，“使自己被听到”，应该说“make myself heard”，用过去分词而不用动词原型，故选D而不选C)。除only放句首句子用倒装外，否定词放句首句子也用
