It is essential that the glass ______ thicker on the outside than on the inside and that the gap between the panes of glass______ a minimum of 7 centimeters.
A. is, is
B. be, is
C. be, be
D. is, be
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______ policy makers struggle to define and implement appropriate legislation, development
As long as
B. As
C. Even
D. While
Around a thousand years ago, one group emerged______was uniquely well adopted to cope with
A. that
B. what
C. it
D. there
抗震设防地区,在墙体内设置拉钢筋一般要求沿墙高每 500mm 设 置一道。()
There is ______ the fact that the new method has greatly raised labor productivity.
A. not denying
B. no denying
C. not to deny
D. not to be denied