对病因未明的疾病,初次进行病因学研究应选用哪种方法开始研究()
A.现况研究
B.病例对照研究
C.队列研究
D.实验流行病学研究
E.筛检
参考答案:A
第四部分 写作(共四节,满分35分)
短文填词(10分)
It hurts to love someone and not be loved in . 86.__________
But what is more (痛苦)is to love someone and never find 8 7. __________
the courage to let that person know you feel. 88. __________
A sad thing in life is when you meet someone means 89. __________
a lot to you,only to find out in the end that it was
never meant to be and you just have to let g . The best kind 90. __________
of friend is the kind you can sit under a tree w , 91. __________
never say a word,and then walk away, (感觉)like it was the best 92. __________
conversation you've ever . It's true that we don't know what we've 93. __________
got until we l it, but it's also true that we don't know what we've 94 __________
been (想念)until it arrives. 95 __________
对立克次体感染最有效的药物是( )。
A.四环素
B.妥布霉素
C.利巴韦林
D.林可霉素
E.氟康唑