命题“∀x∈R,x2>0”的否定是（）_刷题宝

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命题“∀x∈R,x2>0”的否定是（）

A： $\forall x \in R, x^{2} \leq 0$

B： $\exists x \in R, x^{2} > 0$

C： $\exists x \in R, x^{2} < 0$

D： $\exists x \in R, x^{2} \leq 0$

上一题下一题 0.0难度选择题更新时间:2019-02-09 10:30:22

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D

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On this mini-coach tour, we will visit the popular sightseeing landmarks and their surrounding areas — Windsor Castle, Stonehenge & Salisbury Cathedral.

Tour Schedule

The first stop is Windsor Castle, journey time about 45 minutes from London. You will have free time to explore the Castle grounds and the surrounding historic town.

We then head to Stonehenge, journey time about 1hour. Stonehenge is the most famous prehistoric (史前的) site in the UK.

We then head to Salisbury, journey time about 15 minutes. It's one of the finest examples of medieval (中世纪) Cathedrals in Britain. It's also the country's tallest spire (尖塔). In free time, exploring the Cathedral in Salisbury is also a nice choice.

After visiting some of the most popular sites, we'll head back to Central London, arriving at 18:30.

07:30 ~ 09:15 Central London picks-up

London Bridge (7:30 am), Kings Cross (7:55 am), Baker Street (8:10 am), Victoria (8:25 am), South Kensington (8:50 am), Earls Court (9:00 am), Hammersmith (9:15 am).

We advise you to arrive at your pick-up point at least 10 minutes earlier to wait for the bus before your tour, ensuring you do not miss your tour!

Book now

To book this mini-coach tour, please click (点击) on the date of travel using the calender below.

Adult Price: £65.00.

Child Price: £59.00.

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