单选题 Cloning is too complicated a process.

A、 Cloning is too complicated a process.
B、 The technology is yet to be accepted.
C、 Cloning is ethically controversial.
D、 The technology is too expensive.
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单选题 It has helped solve several murder cases.

A、It has helped solve several murder cases.
B、It has become a star police dog in Beijing.
C、It has done better than naturally born dogs.
D、It has surpassed its mother in performance.

单选题 It plays a less important role in one's health than nutrient intake.

A、It plays a less important role in one's health than nutrient intake.
B、It impacts people's health to a lesser degree than sun exposure.
C、It is associated with people's mental health conditions.
D、It is linked with older adults' symptoms of depression.

单选题 His publications.

A、His publications.
B、His first book.
C、His address.
D、His name.

单选题 Due to a fire alarm in their apartments.

A、Due to a fire alarm in their apartments.
B、Because of the smoke and heat damage.
C、Due to the water used to extinguish the flames.
D、Because of the collapse of the three-story building.

单选题 To speed up investigation into criminal cases.

A、To speed up investigation into criminal cases.
B、To test the feasibility of cloning technology.
C、To cut down training expenses.
D、To reduce their training time.

单选题 Investigating the cause of the incident.

A、Investigating the cause of the incident.
B、Helping search for the suspect of the crime.
C、Rescuing the businessmen trapped in the building.
D、Checking town records for the property developer.

单选题 He read it somewhere online.

A、He read it somewhere online.
B、He heard about it from a co-worker.
C、He read an article reviewing it.
D、He watched a TV series based on it.

单选题 It was indefinite.

A、It was indefinite.
B、It was systematic.
C、It was straightforward.
D、It was insignificant.