With the development of science and technology，robot cooks ______ in our families in the future．（ ）
A．appearB．appeared
C．will appearD．is appearing
Tom became interested in books at a very young age． He read every book he could find and bought books of all kinds． Today Tom has a big collection of books． His favourite books are mystery novels and books about detective stories．
The story mainly tells us ．（ ）
A．why Tom does the reading
B．how Tom learned to read
C．how much Tom likes to read
D．what Tom's favourite books are
Are you sure you won't come for a drink with us？
， if you insist．（ ）
A．Not at allB．All right then
C．It dependsD．I don't care
It's an either﹣or situation﹣we can buy a camera this year or we can go on holiday but we can't do ．（ ）
A．otherB．eitherC．allD．both
If steel is heavier than water， why are ships able to on the sea？（ ）
A．floatB．flyC．fallD．flow
You look the same now as you looked ten years ago． You've changed．（ ）
A．completelyB．hardlyC．greatlyD．already