If used ______, even the most poorly designed cell phone should be able to funct

游客2025-06-16 16

问题 If used ______, even the most poorly designed cell phone should be able to function for at least three years.

选项 A、continuously
B、sparingly
C、fortunately
D、uncertainly

答案 B

解析 sparingly节俭地

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Ifused______,eventhemostpoorlydesignedcellphoneshouldbeabletofunct