严重降低钢材的塑性与韧性，特别是低温时促使钢材变脆的元素是（）。 A.硫 B.磷 C

清东陵位于河北遵化，清西陵位于河北______。

The Internet has helped to connect and bring the entire world together. As a result, people now use the Internet to choose services, products and websites that come on the 1st or 2nd page of Google. The Internet has unbelievably revolutionized the whole world and the way in which businesses sell products online.

A recent survey found that Australians are going crazy for online shopping and beating world records for online purchasing. In Australia, over 10 million people now use Google, Yahoo and MSN to find products and services online. 92% of people do not go further, if they find their desired products and services on the 1st or 2nd page of their search. This proves that now consumers have changed their shopping preferences and prefer to shop online rather than visit shopping centers.

There are a number of websites in Australia selling products online. And each website is trying its best to pulltraffic towards the website. It is easy to get traffic, but the whole effort is successful only when there is a sale out of those users viewing your site.

In Australia, people are fond of 100% Australian owned and operated goods. People in Australia prefer to buy things online securely and safely. So there are a few tips that online shoppers should follow before buying online:

☆dentify your dealer and try to know the contact address of the company.

☆Carefully read the description of products before buying and take special note of refunds(退款) of products.

☆Check the cost of products and the way of payment. Also note the extra charges that may be included such as credit cards (信用卡) charges.

☆Get detailed information on confirmation of the order.

☆Check the time between the order and delivery of product.

The main benefit of online shopping is the availability of a huge variety of products in one single website. That makes the selection process easier. If you also want to make your shopping experience unforgettable, then find the best online department store for your desired products and choose the items that offer discounts and bargains online.

60. The passage is mainly about__________.

A. how we can buy things online securely and safely

B. how the Internet has changed the world and the way business is done

C. how the Internet has helped to connect and bring the entire world together

D. how the Internet has changed Australians’ shopping habit and tips for online shopping

61. The underlined word “traffic” in the third paragraph probably means“________”.

A. the number of visitors and the number of pages they visit

B. the vehicles moving along a road or street

C. the communication between different people

D. the trade between different countries

62. We can infer from the passage that __________.

A. you will be charged more if you use a credit card

B. there are many tricks about shopping online

C. the success of an online store isn’t about getting many users

D. people don’t visit shopping centers due to the bad traffic

63. Which of the following opinions probably does the writer hold?

A. Shopping online is a good thing, so the government should encourage it.

B. Shopping online is a dangerous thing, so we should forbid it.

C. Shopping online is a new thing and we need to be careful about it.  

D. Shopping online is a fashionable thing and everyone should follow it.

张某，男，57岁。2天前曾感心悸，心烦，周身乏力，胸闷不舒等症状。今晨起上腹部剧疼，伴有恶心，出虚汗而来院。查体温38．2℃、主率100次／分，律齐，血压80／60mmHg，呼吸21次／分，面色苍白，心脏听诊：心界不大，心尖区第一心音减弱，心电图示：V1～V5ST段抬高呈弓背向上，T波倒置

血心肌坏死标记物检查中，起病后2小时内升高，12小时达到高峰，24～49小时内恢复正常的是（）。

A.肌钙蛋白I

B.肌钙蛋白T

C.肌红蛋白

D.肌酸激酶同工酶

E.乳酸脱氢酶

主板(也称母板或系统板)是计算机硬件系统集中管理的核心载体，几乎集中了全部系统功能，是计算机中的重要部件之一。下图所示的计算机主板上，①处是 (21) ，②处是 (22) 。

A．CPU插槽
B．内存插槽
C．PCI插槽
D．IDE插槽

血糖测定的参考方法是（）

A.己糖激酶法

B.葡萄糖氧化酶法

C.尿酮体

D.全血乳酸

E.胰岛素抗体