13. It has been predicted that nanomaterials will become the most materials in the 21st century.

相似题目

• The system of derricks and winches has been largely replaced on newer ships by cranes（）it is very efficient.

  A . when B . because C . unless D . though

  查看最佳答案

• It has been ten years since the Labour Party came into（）in that country.

  A . control B . force C . power D . charge

  查看最佳答案

• It has been suggested that all government officials __ information on their income.

  A . dissent B . disclose C . unfold D . uncover

  查看最佳答案

• Piston No2 of main engine has been removed, and it will be （） by noon tomorrow.

  A . lifted B . reassembled C . dismounted D . disassembled

  查看最佳答案

• If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of （）.

  A . unburned carbon particles B . excess nitrogen C . a lack of oxygen D . excess hydroge

  查看最佳答案

• John isn’t a diligent student, for it is the third time he has been late, ____?

  查看最佳答案

• It has now become _________ to us that a mistake has been made.

  查看最佳答案

• The Belt and Road Initiative has been so successful because it follows .

  查看最佳答案

• “It has been a wonderful evening. Thank you very much.” “_________.”

  查看最佳答案

• 原文:Our great motherland has never before been so prosperous as it today. 译文:我们伟大的祖国从来没有像今天这样繁荣昌盛。

  查看最佳答案

• The problem ______ it is right or wrong has not yet been decided.

  查看最佳答案

• The bed has been ________ in the family. It was my great-grandmother’s originally.

  查看最佳答案

• It has been quite a long time ______ the two companies established a business relationship.

  查看最佳答案

• Our great motherland has never before been so prosperous as it today.译文：我们伟大的祖国从来没有像今天这样繁荣昌盛。

  查看最佳答案

• If your food is＿＿＿＿＿，this means it has been cooked too long.

  查看最佳答案

• ●If your diskette has been （69) ，the computer can not store any new information on it.（69)

  ●If your diskette has been (69) ，the computer can not store any new information on it. (69) A．formatted B．write protected C．tested D．Certified

  查看最佳答案

• 听力原文：In June, it was reported that the concert would be held in July. But now I heard it has been put off to August.

  When was the concert planned to hold？ A．In June. B．In July. C．In August. D．Unknown.

  查看最佳答案

• It has been arranged that____the following day.

  A．A. were leaving B．B. leave C．C. would leave D．D. leaves

  查看最佳答案

• It has been estimated that the earth’s surface temperature has increased ________ one quarter to three quarters of a degree since 1805.

  A) to B) be C) at D) with

  查看最佳答案

• 听力原文：W: Listen to me, Tom. The exam has been the thing in the past．Just forget about it.

  M: It's easier said than done. Q: What can we learn from the conversation？ (2) A．The exam was easier. B．Tom is sure that he will do better. C．The exam is easier than last one. D．Tom is afraid of failing the exam.

  查看最佳答案

• It has been estimated that the earth's surface temperature has increased ______ one quarter to three fourths of a degree since 1850.

  A．by B．at C．to D．with

  查看最佳答案

• It has been nearly 2000 years since Buddhism was____ to China.A、original

  B、distressing C、introduced D、basically E、dependable

  查看最佳答案

• Since it was developed, Tetris has been______.

  A．applied for almost 33 years B．no longer attracting and popular C．built a solid footing in the mini-game market D．updated into more intricate model

  查看最佳答案

• The old house is in perfect conditions because it has recently been renovated（）

  A．destroyed B．damaged C．restored D．decayed

  查看最佳答案