在购买活动中，消费者情绪和情感的产生和变化的影响因素主要有( )。 A．商品特性的

根据短文内容，判断句子正(T) 误(F).

     This is Jane’s classroom. There are many desks and chairs in it. There is a clock on the wall. The

clock is very new. There are fifty students in Jane’s class, twenty-eight boys and twenty-two girls. Mr

Smith is their eacher. He is a good teacher.

     It’s about 5 o’clock. It’s time to go home. Look! Jane is in the classroom. She is cleaning it.

( )1. There is a picture on the wall. 

( )2. There are twenty-eight girls and twenty-two boys in Jane’s class

( )3. Jane is at home now.

( )4. It’s about 5 o’clock. It’s time to go home.

( )5. There are fifty students in Jane’s class.

新疆紫草的特征不包括

A．呈不规则的长圆柱形，多扭曲

B．皮部疏松，呈条形片状，易剥落

C．表面紫红色或紫褐色

D．体轻，质松软，易折断

E．断面呈同心环层，中心木质部较大

一般拔牙后多长时间可考虑固定义齿修复（）

A.1个月

B.2个月

C.3个月

D.4个月

E.6个月

CRM只是销售过程的一部分

艾滋病的确诊试验（）

A．RPR

B．TPPA

C．WB

D．HIV-Ab

E．HSV ELISA