Children have a natural ________ about the world around them.
A、certaintyD
孩子们对他们周围的事物有着天然的好奇心。考查名词词义选择题。A确定性，肯定的事B能力，才能C精明，聪颖D好奇心，求知欲
Countrylifeisbetterthancitylife________itoffersfreshairandnoiselessenvironment
A linguistic theory is constructed about what ______ is and how it works.
Thebasicunitinthestudyofmorphologyis______.
Theengineer______myfatherworksisabout50yearsold.
Johnson was ________ unknown before running for the presidency.
