中国大学MOOC: As for a syllable, nucleus is essential while ________ and coda are optional.
中国大学MOOC: As for a syllable, nucleus is essential while ________ and coda are optional.
Which is optional on the envelop?
Which is optional on the envelop?
What is the rule about attendance at lectures A: It is optional. B: It is necessary C: It is difficult to enforce
What is the rule about attendance at lectures A: It is optional. B: It is necessary C: It is difficult to enforce
Optional是一种集合类型
Optional是一种集合类型
In CNC panel, there are optional function switches.
In CNC panel, there are optional function switches.
English is ______ for all students, but art and music are optional. A: available B: compulsory C: specific D: basic
English is ______ for all students, but art and music are optional. A: available B: compulsory C: specific D: basic
Which of the following parts of business correspondence is optional?
Which of the following parts of business correspondence is optional?
Which one of the following is the optional part of a business letter?
Which one of the following is the optional part of a business letter?
A verb phrase must contain a verb， but other elements are optional。 （ ）
A verb phrase must contain a verb， but other elements are optional。 （ ）
Johndidnothavetowritethecompositionifhedidn’twantto.Itwas________.（） A: critical B: suitable C: optional D: elemental
Johndidnothavetowritethecompositionifhedidn’twantto.Itwas________.（） A: critical B: suitable C: optional D: elemental