问题 单项选择题 A1/A2型题

离子型对比剂的特点是()

A.低渗性、弱离子性、高亲水性

B.高浓度、低毒性、高亲和性

C.低浓度、高毒性、低渗透压

D.高渗性、高离子性、弱亲水性

E.高浓度、高离子性、高亲水性

答案

参考答案:D

单项选择题
阅读理解

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 mobile­social is weak in Japan where 34% of users never visit a social network on their phone, and this figure rises to 41% 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 second­place 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.