________ percent of all cancers could be averted if people ate more fruits, vegetables, and plant-based foods and minimized high-fat, high-calorie edibles.
[A] 30-40
[B] 40-50
[C] 50-60
[D] 60-70
第1题:
We _____ rather talk about football or the weather or what we had for lunch.
A: will
B: should
C: would
D: could
第2题:
88、下列代码循环遍历列表fruits中的每个元素。 fruits = ["apple", "banana", "cherry"] ____ x ____fruits: print(x)
第3题:
下列语句执行后的结果是: fruits = {'apple':2, 'banana':6, 'pear':4} fruits['banana'] = 7 print(sum(fruits.values() ) )
A.7
B.19
C.12
D.13
第4题:
第5题:
输出字典fruits中键值最大的键值对,完善代码。 fruits={"apple":10,"mango":12,"durian":20,"banana":5} m="apple" for key in fruits.keys(): if __________: m=key print("{}:{}".format(m,fruits[m]))
第6题:
【单选题】显示水果中的第3个水果,正确的命令是?
A.db.test.find({},{"fruits":{$slice:[3,1]}})
B.db.test.find({},{"fruits":{$slice:3}})
C.db.test.find({},{"fruits":{$slice:[2,1]}})
D.db.test.find({},{"fruits":{$slice:2}})