题干

下列有关植物生殖的叙述,正确的是(  )

A:通过无性生殖产生的后代,具有双亲的遗传特性

B:通过有性生殖产生的后代,一定能保持亲代的优良性状

C:果树的嫁接、农作物的播种都属于有性生殖

D:植物的组织培养利用的是植物的无性生殖原理

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D

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    A cab company in one of Japan's major cities is introducing silent taxi drivers. Miyako Taxi, which is based in Kyoto, shows the new idea in March. The business is currently operating five “Silence Taxis” across the city.

    The cars look like any ordinary taxi,but a notice written on the back of the passenger seat  inform passengers that they have entered one of the new silent fleet. Drivers will offer a greeting when their passenger enters the car, and aside from confirming the route they will not engage in small talk. The drivers can indulge in conversation, only if they are spoken to first, and they are also allowed to communicate in emergency situations.

    Announcing the idea, Miyako Taxi said: “This service is currently in a trial stage, with the goal of creating an in-car atmosphere that provides the most comfortable ride for passengers through limiting the driver's speaking.” According to Japan Today, they made the move after hearing reports from passengers that they were fed up being forced to chat with their drivers.

    The company will assess the popularity of the trial before deciding whether to expand it and roll it out across more of their drivers.

    Language and speaking is at the heart of another issue facing Uber drivers, after lost a High Court Battle to block written tests in London. Drivers applying for a minicab license in the capital will now have to pass the written exam following Uber's failed challenge against Transport for London (TfL). The company argued it could see up to 33,000 existing drivers lose their licences under the new rule.

    The company's London head, Tom Elvidge: vowed to challenge the rule and said, “We've always supported spoken English skills, but writing an essay has nothing to do with communicating with passengers or getting them safely from A to B.”