She ______ a strong and positive influence over her friends.
A. draws
B. exerts
C. ensures
D. expends
具有抗肠虫作用的免疫调节剂是
A. 白细胞介素
B. 干扰素
C. 转移因子
D. 左旋咪唑
E. 胸腺素
Mary is always ______ when she doesn't get any mail.
A. affected
B. worried
C. puzzled
D. disturbed
According to time writer, compulsive bargain hunters ______.
A. want to save money to help their budgets
B. can boast of their triumph over others in getting things for less
C. will not have money problems if they can keep to their budgets
D. seldom admit they feel satisfied if they can get things for less than others
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