单项选择题

Two aeroplanes are flying straight towards each other. One is traveling at 10 kilometres per minute, and the other at 15 kilometres per minute. Assuming that the planes are exactly 1,000 kilometres apart, what distance will be between them one minute before they crash into each other

A． 10 kilometres
B．15 kilometres.
C．25 kilometres.
D． 5 kilometres.
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单项选择题
Tom: Hurry up - we haven蒺t got much time - we蒺re going to be late.Jerry: Don蒺t worry.__________ . The train doesn蒺t leave for fifteen minutes, and there isn蒺t much traffic on the road.Tom: I know, but we蒺ve got to park the car first and at this time in the morning there probably isn蒺t much space in the car park.Jerry: __________. I蒺m sure there蒺ll still be a few places left.
A．Leave it to me; Don蒺t be silly
B．Do trust me; Take your time
C．There蒺s plenty of time; Take it easy
D．Let me see; Don蒺t be ridiculous
单项选择题
Different foods are to be found on three shelves in a fridge. Butter is kept below theeggs while cheese is kept above the milk. The butter is also above the milk, but theeggs are on the same shelf as the yoghurt. The ice cream is above the cheese.What is on the bottom shelf
A．Butter
B．Eggs
C．Cheese
D． Milk.
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