合格品一定是高质量产品。（）

The panda likes ______ trees.[ ]

A.climb

B.climbs

C.climbing

人类在正常情况下，精子细胞内染色体的数目和类型是

①44+XY②44+XX③22+Y④22+X  [ ]

A．④

B．③

C．①和②

D．③和④

Google has been collecting tons of data about smartphone usage around the world．  Here are some of the most surprising and interesting facts:

Android is most popular in Japan, with 55% of respondents（调查对象） using it, compared with 39% for iOS．Android is also number one in a few other countries, including New Zealand （41%）, the US（40%）, and China （38%）．

iOS is farthest ahead in Switzerland, with 52% usage vs 23% for Android．Other countries where iOS is far ahead include Australia （49% vs 25% Android）, Canada （45% vs 23% Android and 23% Blackberry）,  and France （43% vs 25% Android）．

In Egypt, Windows Mobile is far more popular than iOS．13% of survey respondents use the Microsoft smartphone platform, behind Symbian （19%） and Android （14%）． iOS is very far down at 4%．

Mobile social networking is biggest in Mexico and Argentina, where 74% and 73% of users visit a social network daily．But mobile-social is weak in Japan where 34% of users never visit a social network on their phone, and this figure rises to41% in Brazil．

Watching video is most popular in Saudi Arabia, with 59% of respondents doing it daily．Number two is Egypt, with 41%．

Chinese users shop from their phones．59% of Chinese users do this, compared with only 41% in second-place Egypt．Chinese users also love to write reviews．41% of them write a review of a local business after looking it up on their smartphone．Number two, Japan, is far behind, with only 24% of respondents doing this．

小题1:Which of the following best describes the usage of the smartphone operating systems in Egypt?

A．Windows Mobile＞iOS＞Symbian＞Android

B．Android＞Windows Mobile＞iOS＞Symbian

C．iOS＞Android＞Symbian＞Windows Mobile

D．Symbian＞Android＞Windows Mobile＞iOS小题2:In which of the following countries is mobile social networking least popular?

A．Brazil．

B．Japan．

C．Mexico．

D．Argentina．小题3:In which section of a newspaper can we most probably read the passage?

A．Health．

B．Environment．

C．Technology．

D．Entertainment．

电影讲述了在生活中遭遇了情感危机的耿浩陷入难以自拔的痛苦之中，好基友郝义为了帮助他摆脱痛苦，带着耿浩开始了一段非常搞笑的疯狂的猎艳之旅。登2014年度国产电影榜首，并成为国产电影史继《泰囧》和《西游降魔》之后的第三名，这电影叫什么？

下列酶和蛋白因子中，参与DNA复制的是（）。

A．ρ因子

B．σ(sigma)因子

C．DNA结合蛋白

D．释放因子(RF)

E．逆转录酶