She did not feel（）going out, as she had a slight headache.
A. about
B. like
C. after
D. for
Having lost his job and his family, Jerry felt himself（）by anger and sadness.
A. experienced
B. overcome
C. experience
D. overcame
The price of gold rose again, partly （）news about the war.
A. result in
B. go with
C. because
D. due to
若要采用Southern或Northern印迹方法分析某特定基因及其表达产物，需要（）。
A. 制备固定在支持物上的组织或细胞
B. 收集组织或细胞样品，然后从中提取总DNA或RNA
C. 利用PCR技术直接从标本中扩增出待分析的片段
D. 收集组织或细胞样品，然后从中提取蛋白质
E. 收集培养细胞的上清液
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