It is essential that the temperature not be elevated to a point______ the substance formed

While it is essential that the text covers the subject adequately, it is also important th

Which of the following sentences is an ORDER？A．It is essential that all the facts be exami

It is essential that the glass ______ thicker on the outside than on the inside and that t

It is essential that he_____all the facts first.（2014)A．is examiningB．will examineC．examin

The opening ceremony is a great occasion. It is essential______for that.（2003年考试真题）A．

While it is essential that the text cover the subject adequately, it is also important tha