【单选题】格式塔学派通过研究黑猩猩的学习所提出的学习理论是【 】。
【单选题】寒淫证的临床表现是
C.
恶寒重,或伴发热,无汗,头身疼痛,鼻塞或流清涕,脉浮紧
【单选题】– Susan, you know what? We can have a dog! – Great! But I prefer to have a cat. It is much _______ to look after.
【简答题】在大肠杆菌中,外源基因表达产物的主要形式为()和()。
【单选题】– I prefer to eat cakes that have cream on top. – ________! They are really delicious.
【判断题】外源基因表达产物在大肠杆菌中以包涵体的形式出现时,其蛋白质的高级结构是遭到破坏。
【单选题】I’d prefer _______ if I didn’t have to get up early on Sundays.
【单选题】As a student, I’d prefer _______ if I didn’t have to do so much homework.
【单选题】外源基因在大肠杆菌中以融合蛋白的形式表达的优点是:a.融合基因能稳定扩增;b.融合蛋白能抗蛋白酶的降解;c.表达产物易于亲和层析分离