扩散退火的加热温度一般在固相线以下100~200℃

A、1,2,3

B、3,1,2

C、2,1,3

D、3,2,1,

A、性接触传播

B、注射途径及输血制品传播

C、母婴传播

D、呼吸道传播

E、日常生活一般接触传播

A、回火屈氏体

B、珠光体

C、回火索氏体

D、回火马氏体

A、平行片层方向为主

B、垂直片层方向为主

C、以哪个方向为主具有不确定性

D、以上都不对

The following sentences a-f are taken from the Discussion Section of a research article. The first and the last sentences are given, but the rest sentences are in a scrambled order. Put them in the correct order. The first sentence: The purpose of the study was to investigate whether Students in Higher Education on an EAP writing course would benefit from computer assisted instruction. a. Another reason for the success of the materials may be that it allows students to spend more time on the course than is normally the case in a classroom based programme. b. It also seems to be the case that the individually directed nature of the on-line materials helps the students to focus on their own specific needs as well as allow them to access their materials in their own time. c. The findings clearly suggest that they do. d. The students who took part in the computer assisted element of the writing course outperformed those who followed the traditional course in every aspect as shown by their performance on the University of Hertfordshire Writing test. e. They showed particular strengths in the task achievement element of the assessment, suggesting that the computer assisted materials really help the students to understand and focus on the purpose of their writing. f. This supports and adds to the findings of Jones & Smith (1997) and Harris (2002), who showed similar results for an on-line grammar course. The Last sentence: This study has taken a step in the direction of justifying the inclusion of web-based materials in EAP writing courses for post-graduates on English language preparation course.

A、cdebaf

B、fdcabe

C、dbcbef

D、edbafc