X-ray examination of the kidneys using radio-opaque contrast material is known as _______.

an opaque, usually white, fluid applied to paper to mask errors in text A:

Among the five national radio channels of BBC, ___________is sometimes referred to as “Radio Bloke”. A: Radio 1 B: Radio 2 C: Radio 3 D: Radio 5 Live

The word “radar” is an acronym for _______ A: Radio Detecting and Ranging B: Radio Defect and Reach C: Radio Defending and Range D: Radio Detect and Range

<input type="radio" name="radio" id="radio" value="male" />这段代码表示

Science and technology constitute a primary __________ force. A: penetrating B: productive C: opaque D: quantitative

5 turn off a radio ____ hold a radio ____

GPRS的英文全称为：（）。 A: AGlobal Packet Radio Service B: BGeneral Packet Radio Service C: CGeneral Packet Radio System D: DGlobal Packet Radio System

The bottle is __________ to keep the ingredients from being exposed to sunlight. （ ） A: opaque B: obvious C: mysterious D: opulent

（）, she began to search some on TV. A: There were so no interesting radio programs B: There was no interesting radio programs C: Without being interesting radio programs D: There being no interesting radio programs