阅读短文,选择最佳答案。Holmes said, “Somebody sent a letter with five pips① in it from India, and arrived seven weeks later to kill John's uncle. Then they sent five pips from Scotland and arrived three days later to kill John's father. Now they have sent five pips to John from Lon...
Choose the appropriate letter from A-D for question 1. 1. Corot is an instrument which (A) can help to search for certain planets (B) is used to find planets in the orbit (C) can locate planets with human beings (D) can spot any planets with water. Do the following statements agree...