What could have()her ()this state of despair?
A. brought;to
B. brought;on
C. brought;about
D. brought;forward
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He strode quickly down the street, ignoring the beggars who were () out their hands for money.
A. extending
B. stretching
C. lending
D. reaching
The past decade has witnessed an enormous worldwide political, economic and cultural()
A. tradition
B. transportation
C. transmission
D. transformation
腺病毒载体的特点中不包括()。
A. 所获病毒滴度高
B. 外源基因可瞬时高表达
C. 外源基因长期稳定表达
D. 基因组结构复杂
E. 能感染分裂或非分裂状态的细胞
恶性肿瘤的基因治疗方案中,目的基因导入体内最常用的给药途径是()。
A. 瘤内注射
B. 静脉注射
C. 皮下注射
D. 肌肉注射
E. 骨髓移植