一个四棱锥和一个三棱锥恰好可以拼接成一个三棱柱.这个四棱锥的底面为正方形，且底面边长与各侧棱长相等，这个三棱锥的底面边长与各侧棱长也都相等．设四棱锥、三棱锥、三棱柱的高分别为
，
，
，则
（ ）
A． |
B． |
C． |
D． |
The ___ （街道）of the city were crowded with people.
We made an a___ to the villagers for money to build the bridge.
The old lady was increasingly ___ (虚弱的) after her operation.
Ancient Greece was an advanced ___ (文明).
This store has an excellent r___ for fair dealing.
His designs have a strong ___ （可视的） appeal.
He is one of our p___ employees.
These two ___ （签名） are very similar. Can you tell them apart?
The telephone and gramophone were c___ inventions.
The ___ （委员会） has(have) decided to dismiss him.
The engineers are so busy that they have zero time for outdoor sports activities, ___ they have the interest.
| A．wherever |
| B．whenever |
| C．even if |
| D．as if |
This restaurant has become popular for its wide ___ of foods that suits all tastes and pockets.
| A．division |
| B．area |
| C．range |
| D．circle |
Teachers have to constantly update their knowledge in order to maintain their professional ___.
| A．consequence |
| B．independence |
| C．competence |
| D．intelligence |
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