【单选题】以下声明和使用常量的语句中,错误的是: A. let a = 5 B. let a :Int a = 10 C. let a = 5 a = 10 D. let a:Int = 5, b = 10, c:Float = 10

console.log(a) let a = 10

script> let a = 10; { let a = 100; console.log(a)//(1) } console.log(a)//(2)

10.Let’s put up some pictures on the ______ walls. A: A) blank B: B) empty C: C) bare D: D) hollow

【多选题】下列命名正确的是: A. var 1a = 10 B. var ho = 10 C. var @ = 10 D. let dog = 20

—What time shall we meet ____ Sunday? —Let’s meet ____ 10:00 o’clock.

The new house will . A: be let B: be to let C: let D: to be let

【填空题】When I find myself in times of , Mother Mary comes to me Speaking words of , let it be And in my hour of she is standing right in front of me Speaking words of wisdom, let it be Let it be, let it be, let it be, let it be Whisper words of wisdom, let it be And when the people living in the world agree There will be an , let it be For though they may be , there is still a chance that they will see There will be an answer, let it be Let it be, let it be, let it be, let it be

Swim, let nature cleanse your heart; read, let the words warmyour stillness; keep a raise, let free conditioning your exhaustion; put out of your mind, let things. Fun, let laughteraround your heart; sing, let the song express your memories; let a let, let pass to retain your tolerance; say, let you unlock your doubts; look, let the distance from your hope.

The baby can’t even walk, _______ run. A: let alone B: let by C: let down D: let in