Potential subjects should be informed of the research and __________ an opportunity to decide if they want to participate．

[单选题]Potential subjects should be informed of the research and _______ an opportunity to decide if they want to participate。A．gaveB．givingC．giveD．be given

[单选题]By law，a buyer should have（）opportunity to change his mind.A . accurateB . urgentC . excessiveD . adequate

[单选题]You should learn to take ______of every opportunity to improve your oral En

[单选题]You should learn to take _____________of every opportunity to improve your

[单选题]Should either of these situations occur, wrong control actions might be tak

[单选题]In order to ______ the disease, the first thing we should do is to do resea

[单选题]C．ontemporary artists choose subjects______.A． without reference to the character of their subjectsB． that only provide an interesting patternC． that there is no meaning in itD． partly for the meaning of the subjects

[名词解释] Mixed potential

[单选题]DECIDE是指（）。A .觉察、估计、选择、鉴别、实施、评价B .觉察、选择、估计、鉴别、实施、评价C .觉察、鉴别、估计、选择、实施、评价

[单选题]___ they decide which college to go to, students should research the admission procedures.A． AsB． WhileC． UntilD． Once