【简答题】用所给词的正确形式填空。 1. What's he doing now? He ________ (drink) pop. 2. Is Kim _________ (sing)? 3. My mother like __________ (watch) TV, but she __________ (not watch) now. 4. Please be ___________ (quietly...
【单选题】—What's she doing now? —She's _____. [ ]
【简答题】Ig中,分子量最大的是(),在血清中含量最高的是(),具有J链与分泌片的是(),个体发育过程中最先合成和分泌的抗体是(),免疫应答中最早产生的抗体是(),能介导Ⅰ型超敏反应的是()。
【简答题】自艾滋病被发现那天起,科学家就通过国际合作致力于研制让健康人免于感染的疫苗。2009年9月24日,美国和泰国研究人员共同研制出了具有免疫效果的艾滋病“联合疫苗”。这种“联合疫苗”是由两种疫苗组成,其中一种负责刺激免疫系统,使其做好攻击艾滋病病毒的准备;第二种则担当“助攻手”,负责增强免疫反应。下图为人体免疫的部分过程示意图,请回答: 科学家早已认识到,研制疫苗是抗击艾滋病最有效的良方。科学家研制的...
【单选题】who's John Michelle? what's she doing now?
A.
Secretary of the AZ Landscape Architecture Company; Answer the telephon
B.
Principal of the Senger Design Group; Make an appointment to talk about a feasibility study
C.
manager of the AZ Landscape Architecture Company;In a meeting
【单选题】— What's she doing now? — She's _____ in the sun and _____ an apple. [ ]
【简答题】请结合上下文将下列对话补充完整。 1. — What's he doing now? — He's __________________ football. 2. — When do you go to school? — I often __________________ to school at 7: 30. 3. — What's Lily doing now? — She is ____...
【单选题】—What's your mother doing now? —She ______ supper in the kitchen. [ ]