【简答题】I have a friend who never exercises unless she’s training for a marathon.A. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0我有一个朋友从来不锻炼,除非她去进行马拉松训练。B. 1111MicrosoftInternetExplorer402D...
【单选题】根据下列文章,请回答 16~20 题。 I have a friend who is a team leader of about 25 employees who are primarily women. She' s found a trick that works for her most of the time, but not always. Those staff who appear...
A.
We shall not be moved.
B.
Money means freedom.
C.
Photos taking are pleasant.
D.
There are people who are so careless about dressing.
【简答题】阅读理解。 Tom: I have a friend who is from the UK. He smokes a lot every day. He'll be 40 this year and 4 years ago his doctor told him he wouldn't make it to 50. That's about when his daughter will gradu...
【简答题】已知等差数列{a n }为递增数列,满足 a 3 2 =5 a 1 +5 a 5 -25 ,在等比数列{b n }中,b 3 =a 2 +2,b 4 =a 3 +5,b 5 =a 4 +13. (Ⅰ)求数列{b n }的通项公式b n ; (Ⅱ)若数列{b n }的前n项和为S n ,求证:数列{ S n + 5 4 }是等比数列.