在分块查找法中,首先查找______,然后再查找相应的______。
参考答案:索引表块
书面表达。
假定你是李华,从互联网(the Internet)上得知一个国际中学生组织将在新加坡
(Singapore)举办夏令营,欢迎各国学生参加。请写一封电子邮件申请参加。
内容主要包括:
1.自我介绍(包括英语能力);
2.参加意图(介绍中国、了解其他国家);
3.希望获准。
注意:
1.词数100左右:
2.可以适当增加细节,以使行文连贯
3.邮件开头和结尾已为你写好。
Dear Sir or Madam,
_________________________________________________________________________
Regards,
Li Hua
Which statement is TRUE concerning the danger signal?().
A.When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal
B.Only the stand-on vessel can sound the danger signal
C.Distress signals may be used in place of the danger signal
D.The danger signal consists of 4 or more short blasts of the whistle