There ______ a pen and some books on the desk. [ ]
A. is
B. are
C. am
D. be
答案:A
Which of the following is NOT an advantage of technical analysis()
A. It does not depend on the analysis of market trading data, such as security prices and trading volume.
B. It is relatively easy to implement.
C. It tells the analyst when to buy, but not necessarily why investors are buying.
每艘救生艇在弃船演习中,应至少每()个月降落下水一次。
A、1
B、2
C、3
D、4