the middle joint of the leg, which allows it to bend
未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181}
A: sky
B: Thursday
C: knee
D: great
未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181}
A: sky
B: Thursday
C: knee
D: great
举一反三
- a meal that is eaten in the middle of the day 未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181} A: knee B: postcard C: surprise D: lunch
- firm and stiff; not easy to bend, cut or break 未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181} A: feel B: Thanks C: know D: hard
- the fifth day of the week; the fourth working day 未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181} A: young B: city C: Thursday D: phone
- with a lot of wind 未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181} A: hair B: windy C: they D: there
- mother 未知类型：{'label': 'questionDesc', 'content': '请根据题干的描述选择合适的词语。', 'isMemberControl': 0, 'type': 181} A: mom B: is C: nineteen D: elephant