假设有下面程序段：inta；floatb;b=a=4.5;下面错误的描述是

已知向量a=（-4,3）则向量a的模为（）

Part4ReadingComprehensionTEXTA1.HowcouldCalifornia’sdroughtcrisisbesolvedaccordingtosomeresearchers?

Part4ReadingComprehensionTEXTA-22.Whatcanbeinferredaboutextractingwaterfromdeepaquifers?

Part4ReadingComprehensionTEXTA-33.Whatismentionedasaconsequenceofextractingwaterfromdeepunderground?

Part4ReadingComprehensionTEXTA-44.Whatdoestheauthorsayaboutdeepwells?

Part4ReadingComprehensionTEXTA-55.Whatmayhappenwhendeepaquifersareusedaswatersources?

Part4ReadingComprehensionTEXTB-66.Inthispassage,theauthorgives_________.

Part4ReadingComprehensionTEXTB-77-Inthefirstparagraph,theword"disinterred"mostprobablymeansto_______.

Part4ReadingComprehensionTEXTB-88.Whichofthefollowingistrueaccordingtothesecondparagraph?

Part4ReadingComprehensionTEXTB-99.TheauthormentionedhisdoginParagraph4becausehewants____

10.Accordingtothepassage,theauthorhasneverbeenrobbedinNewYorkbecausehe______.

python3解释器执行，下面的示例代码后，l2的结果是():>>>importcopy>>>l1=[1,2,[3,4]]>>>l2=copy.deepcopy(l1)>>>l1[2]='a'>>>l2A[1,2,['a',4]]B[1,2,'a']C[1,2,[3,4]]D报错

以下程序的输出结果是：deftest(b=2,a=4):globalzz+=a*breturnzz=10print(z,test())

以下程序的输出结果是：deftest(b=2,a=4):globalzz+=a*breturnzz=10print(z,test())