It is implied in the first paragraph that
A. there should be no difference in methodology between physical and social sciences.
B. social sciences lag far behind physical science in terms of methodology.
C. social sciences have achieved little due to limited data.
D. the Internet can never advance scientific research unless it is properly used.
查看答案
当融券者卖空股票后,如果担心股票价格继续上涨,可以通过卖出股票指数期货和约的方法进行风险对冲。()
A. 正确
B. 错误
应首选何种辅助检查（）
A. 血常规
B. 侧脑室穿刺
C. 头颅CT
D. 头颅B超
E. 硬脑膜穿刺
What does the auction contribute to？
A company's inventory clearance.
B. A museum's financial trouble.
C. The housing market.
D. A charitable cause.
One deserves to claim on some product only when
A. his labor accounts for the product and its value.
B. he has the priority to lay claim on the product.
C. his labor is widely recognized and respected.
D. he has the grounds for making claims first.
微信支付 
支付宝支付