题干

如同发明炸药时没有想把炸药用于人类互相残杀的战争一样,科学家在创造DNA重组技术时,也不是为了用于战争,但却无法抵挡新技术在军事方面的运用,生物武器就这样悄然出现了.下列关于生物武器的说法错误的是(  )

A:生物武器难以检测,杀伤时可能并不会被马上察觉

B:生物武器没有明确的标识,潜在危害大

C:依靠科学力量和人类的文明合作,生物武器也会受到限制

D:生物武器适应能力强,不受气候影响

上一题 下一题 0.0难度 选择题 更新时间:2019-03-14 07:19:27

答案(点此获取答案解析)

D

同类题1

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项为多余选项。

        America's holiday shopping season started on Black Friday, the day after Thanksgiving.

____Shoppers make the most money this time of year, about 20 percent to 30 percent of all revenue all year. About 136 million people shopped during the Thanksgiving Holiday weekend.

____In an era of instant information, shoppers can use their mobile phones to find deals. Nearly 80 percent of this year's holiday shoppers, or about 183.8 million people, shopped on Cyber Monday.____Online spending on Black Friday rose 15 percent to hit $2.7 billion this year. Cyber Monday spending increased 12 percent to $3 billion. NBC News reported that for many, shopping online was a more comfortable alternative than crowded malls.

      The shift to online shopping has had a big impact on solid shopping malls. Since 2010, more than 24 shopping malls have closed and anadditional 60 are struggling. Fortune says the weakest of the malls have closed. However, the business in malls is thriving again, it adds.  According to a survey, 94.2percent of malls were full with shops by the end of 2014.____

      The average American consumer will spend about $805 on gifts. That's about $630.5 billion between November and December – an increase of 3.7percent from last year.

____That goes toChina's Singles' Day, celebrated on November 11, which posted record sales of$14.3 billion in 2015.

A.More and morepeople shop online nowadays.

B.That is thehighest level in 27 years.

C.It is thebusiest shopping day of the year.

D.One-in-fiveAmericans used a tablet or smart-phone.

E.Thetraditional mall industry can hardly survive.

F.Cyber Mondayfalls on the Monday after Thanksgiving and Black Friday.

G.Nonetheless,Cyber Monday is not the biggest online shopping day in the world.