【单选题】既决定工程建设的技术经济效果乃至工程建设的成败，又是工程建设在技术方面较为关键的一项工作是( )。

【单选题】The kidnappers have given the couple ______ instructions not to involve the police.

【单选题】Read tile following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.8（） A．for B．without C．as D．about

【单选题】As used in the second paragraph, the expression "play safe" most probably means（） A．to spell correctly B．to write smoothly C．to avoid using words one is not sure of D．to use dictionaries frequently

【单选题】The potential for hazardous weeds developing from genetically-modified plants is greatest for ______.

【单选题】This passage mainly discusses （） A．the necessity of spelling B．the role of developing writing skills C．the complexities of spelling D．the relationship between spelling and the content of writing

【单选题】假设学生表中有一个“姓名”字段，查找姓“刘”的记录准则是( )。

【单选题】网络管理是网络得以正常运行的保证。下列说法中，哪一个是正确的

【单选题】The results of economic mismanagement were ______ by a series of natural disasters.

【单选题】Teachers are different in their opinions about（） A．the necessity of teaching spelling B．the role of spelling in general language development C．the way of teaching spelling D．the complexities of the ba...