At least 100 million people are ____________; 600 million people live under the conditions which are threatening _______________________.
Related examples are ___________.
Processes are ____________.
The temporal lobes are about ______ whereas the occipital lobes are about _______.
The upper curves of the brain are called ______________, while the deep grooves are called ________________.
We are in the same class. We are __________.
Overall, Results deal with ______，and Discussion deals with _____；facts are ________, while points are _________.
There are two types of social practices. they are _____________ and _____________.
Corporate bonds are less risky if they are _________ bonds and municipal bonds are less risky if they are _________ bonds.
Rate variances are the same as ________ variances. Efficiency variances are the same as ________ variances.
Monocytes are ________.
Lake poets are___________
The Hawaiian Islands are called remote because they are ______________
The items in categories 1 to 5 are collected on ______________________. Large items are only col-lected on ___________.
—Where are ______ ？ —______ are in ______ pencil-box.
The astronauts on board the spaceship______ in shape by running around the ceiling of a huge circular room.
How are you. _________________
Training astronauts______________not an easy thing.
They are called ____________.
Some girls are_____; a few, but very few, are_____.
People are asked__________．
Snakes are____blooded animals while cats are_____blooded ones
If the twins are easy to tell from each other, they are ____________.
Medical research are painfully aware that there are many problems_________________（他
