以下要输出“hello,world!”正确的是？ A: String s=String.format("%1s%2s","hello","world");System.out.println(s); B: String s=String.format("%1$s,%2$s","hello","world");System.out.println(s); C: String s=String.format("%s,%s","hello","world");System.out.println(s); D: String s=String.format("%1s,%2s","hello","world");System.out.println(s);

以下程序段的输出结果是 。Char s[ ]=”Hello World!”;Strlwr(s);Printf(“%s”,s); A: hello world! B: HELLO world! C: hello WORLD! D: HELLO WORLD!

______thisway,oneof_____thefavoritedrinkswasinvented. A: In;world’s B: By;world’sCOn!WorldD,To;world

中国大学MOOC: The U.S. is the world’s greatest power and the world’s greatest debtor.

for s in "hello world": A: hello world B: world C: hello D: helloworld

BRICS countries comprise nearly half of the world's population, 1/4 of the world's landmass.

Zhang Heng invented the world’s first water-powered armillary sphere and the world’s first seismometer.

How much oil does the Middle East produce today A: most of the world's oil supplies. B: 2/3 of the world's oil supplies. C: 1/3 of the world's oil supplies. D: 1/4 of the world's oil supplies.

设原字符串s为StringBuffer型，且s="Hellojava"，如果想用子串替换把s转换成"HelloWorld"，则正确的语句是（） A: s.replace（6，9，"World"）； B: s.replace（6，10，"World"）； C: s="World"； D: s=replace（"java"，"World"）；

Where is the world’s largest McDonald’s ?