题目内容

Why do researchers begin to show interest in online interaction experiment？

A. To reduce the cost per research participant.
B. To upgrade the level of rigor of research in social sciences.
C. To conduct worldwide research that was unfeasible before.
D. To take full advantage of achievements made by physical sciences.

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根据()的不同,房地产转让可分为有偿和无偿两种方式。

A. 转让的对象
B. 转让的方式
C. 转让的范围
D. 转让的内容

如果原材料在生产产品的每道工序开始时一次投入，则用来分配原材料费用的最后一道工序的完工率不一定为100%。()

A. 正确
B. 错误

主要用于冷热水管、消防水管系统、工业管道系统。

A. 丁烯管
B. PVC-U管
C. PVC-C管
D. PPR管

听力原文： Mr. Stone. This is Cynthia Riddles from the Northwest Gazette. I am calling to thank you for your past support and to invite you to this year's charity auction. We are currently raising money for Habitats for Humanity's new homeless shelter. The auction will be on Saturday, June 10th at the Starlight Inn. You can call us at 828-2225 to reserve your ticket. Thanks for your support. We look forward to seeing you there.
What is Cynthia hoping to accomplish？

A. Sell tickets to the auction.
Build a homeless shelter.
C. Arrange a meeting.
D. Make a donation.