对于胸部CT导向穿刺活检的论述，错误的是()

A．利用目标扫描选择出最佳定位层面 

B．穿刺活检的定位层面病变显示应最大、最清晰 

C．穿刺时病人必须采取仰卧正位，保持不动 

D．穿刺针穿入后，应于该层面扫描确认准确与否 

E．穿刺针拔出，活检完毕，亦应继续扫几层

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) A scientist who does research in economic psychology and who wants to predict the way in which consumers will spend their money must study consumer behavior. He must obtain (1) both on resources of consumers and on the motives that (2) to encourage or discourage money spending. If an (3) were asked which of three groups borrow most -- people with rising incomes, (4) incomes, or declining incomes -- he would (5) answer: those with declining incomes. Actually, in the years 1997 -2000, the answer was: people with rising incomes. People with declining incomes were next and people with stable incomes borrowed the (6) . This shows us that tradition- al (7) about earning and spending are not always (8) Another traditional assumption is that if people who have money expect prices to go up, they will (9) to buy. If they expect prices to go down, they will postpone buying. (10) research surveys have shown that this is not always (11) The expectations of price increases may not stimulate buying. One (12) attitude was ex- pressed by the wife of a mechanic in an interview at a time of rising prices. Her family had been planning to buy a new car but they postponed this purchase. (13) , the rise in prices that has al- ready taken place may be resented and buyer’s resistance may be evoked. The (14) mentioned above was carried out in America. Investigations (15) at the same time in Great Britain, however, yielded results that were more (16) traditional assumptions about saving and spending patterns. The condition most contributive to spending (17) to be price stability. If prices have been stable and people consider that they are (18) , they are likely to buy. Thus, it appears that the common (19) policy of maintaining stable prices is based on a correct understanding of (20) psychology.

Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.5（）

A．But

B．However

C．So

D．Although