搜题请搜索小程序“爱下问搜题”
问题 单项选择题

男，47岁，近3个月来出现讲话缓慢，语言低沉，右手抖动，右上肢运动迟缓，精细动作不行，有一氧化碳中毒病史，该患者可能的诊断是（）

A.脑血栓形成

B.帕金森病

C.脑出血

D.帕金森综合征

E.特发性震颤

答案

参考答案：D

选择题

某有机物的组成为碳52.25%、氢13%，该有机物1g与足量金属钠反应，标准状况下放出0.243LH2，则该有机物的分子式为（　　）

A．C2H5OH

B．CH3CH2CH2OH

C．CH3OH

D．C4H9OH
查看答案
单项选择题

Section Ⅰ Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 Points) With the rapid spread of the internet eye where in the world, and the (1) number of users, one of the most exciting developments on the internet is E-commerce -- (2) commerce. E-commerce has two forms, (3) business-to-business, or B-to-B, and business-to-consumer, or B-to-C. B-to-C was the first of these developments. It grew (4) from the first days when people started to buy things from their homes without going to a shop. First came "catalogue shopping" (5) you choose what you want from a catalogue (6) pictures and other details of everything that is (7) sale. You then send an order with a check by (8) and the things you have chosen sent to your home. Then (9) "television shopping", where (10) a catalogue, the items for sale are shown or (11) on television to attract the customer. (12) , the customer sends a check and the item is delivered to his or her home. B-to-C is the (13) development, where the "catalogue" is (14) on the internet, combining the advantages of both the book catalogue and tile television and indeed adding more (15) The customer makes his choice but rather than sending an order and a (16) through the post, he places the order and pays for it using his credit card, all using the (17) Many people worry about giving (18) of their credit card over the internet and the danger that it may be deceitfully used. (19) , the general view is that with modern systems of secure measures the dangers of the misuse of credit cards is (20) greater in a shop, garage or restaurant than in using it for shopping on the internet.

Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.17（）

A．on

B．for

C．at

D．in
查看答案