4.考查谓语动词-时态语态-一般过去时的被动。句意:高等阶层的公民被允许住在离中心地带更近的地方。文体句子结构可知,空格处在句中作谓语,和主语Citizensofhighersocialclasses构成被动关系,因为是对过去事实的陈述应用一般过去时。故填werepermitted。 5.考查谓语动词-时态-一般过去时。句意:这些高级官员和有钱商人的...
But still, too many parents are buying the traditional glass glasses for their children. This is mainly because many parents know little or nothing about the good points of the resinous glasses. Besides, the price for the new glasses is a little higher than the traditional ones. ...
identifying specific and preserved molecules located on the pathogen surface the defined as pathogen-associated molecular patterns (PAMPs) [75]. PAMPs are molecular components potentially present in all microorganisms but absent in higher organisms. Examples of PAMPs comprise Gram-positive ...