From my point of view，the theory that by the scientist is not quite scientific．
| A．was risen | B．brought up |
| C．had been raised | D．was put forward |
After being questioned by the police , he admitted ____in the supply of drugs over a 20-year period.
| A． to be involved | B． being involved | C． involved | D． been involving |
If you are able to create a positive ______towards reading in your home ,your children will be more likely to seek out reading as a way to gain praise
| A． belief | B． attitude | C． practice | D． habit |
Cucumber contains a high content of vitamin C which is five times higher than _____of watermelon.
| A． ones | B．it | C． that | D．those |
Population experts say that by 2050 the world will have about 2 billion people aged over 60,____as today.
| A．as three times | B． three times as many |
| C． three times many | D． three times many as |
In remote mountainous villages in China, it is not ______ to find families with men wearing thick moustache, shabby clothes and worn shoes, chewing tobaccos and with porridge as their main daily food.
| A．rare | B．seldom | C．ordinary | D．hardly |