What does the author say about Singl - 考试宝

单选题 What does the author say about Singles' Day?

A、 It was first celebrated in 2009.

B、 It was first entitled by single Americans.

C、 It was used by singles to receive discounts.

D、 It was made up to be against Valentine's Day.

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单选题 What does the author mean by saying "blunt the sharp edge of enthusiasm" (Para.4)?

A、Put a stop to the deep sea mining projects.

B、Solve the conflicts among deep sea miners.

C、Cool down the craze of deep sea exploration.

D、Recognize the enthusiasm towards the ocean.

单选题 What have the scientists discovered about the amphipods?

A、They are trapped in the trench.

B、They live on organic pollutants.

C、They have been highly polluted.

D、They are identified as a new species.

单选题 What has Nautilus Minerals done with deep sea mining?

A、It has made great investment in the mining machines.

B、It has initiated the scientific exploration of the deep sea.

C、It has made critical contributions to the deep sea assessment.

D、It has put some energy into analyzing the deep sea ecosystem.

单选题 What do we learn about the Mariana Trench?

A、It is the center of the world's ocean.

B、It has been affected by contamination.

C、It remains untouched by human activity.

D、It has been profoundly explored by scientists.

单选题 What is the main motivation for the mineral exploitation in the deep sea?

A、Scientific value.

B、Economic interest.

C、Curiosity of the ocean.

D、Geological exploration.

单选题 What did Alan Jamieson's team use the "lander" for?

A、Getting deep sea adventure.

B、Getting samples from the deep sea.

C、Testing water pressure in the trench.

D、Clearing away the industrial pollutants.

单选题 What is the author's attitude toward deep sea mining?

A、Objective.

B、Pessimistic.

C、Suspicious.

D、Indifferent.

单选题 What do we learn about deep sea mining?

A、Deep sea mining has generated great benefits to our life.

B、Deep sea mining has posed a serious threat to ocean systems.

C、Cost-effective technology for deep sea mining has been developed.

D、A perfect penalty system for deep sea mining has been established.