Since computers were introduced, they____ to be useful tools for people weak in math.

• A、had proved

• B、have proved

• C、 will prove

• D、are proving

Directions:In each of the following groups of words, there are four underlined letters or ltter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet

• A、 sweat

• B、 please 

• C、beat

• D、meat

新學(xué)期伊始，你們班準(zhǔn)備組織-場迎新晚會，讓同學(xué)們熟悉起來。你(Li Yuan)打算邀請外教

( Tim)來參加迎新晚會。請給他寫-封e-mail,內(nèi)容包括:

(1)邀請他參加迎新晚會;

(2)介紹迎新晚會的一些活動安排;

(3)希望他能夠做個簡短發(fā)言;

(4)期待他的到來。